45 中国北斗导航系统-备战2025年中考英语时文热点专练

45 中国北斗导航系统 中国自行研制的全球卫星导航系统 北斗卫星导航系统（BeiDou Navigation Satellite System）是中国自行研制的全球卫星导航系统，也是继GPS、GLONASS之后的第三个成熟的卫星导航系统。 其由空间段、地面段和用户段三部分组成，可在全球范围内全天候、全天时为各类用户提供高精度、高可靠定位、导航、授时服务。 2023年12月26日，中国在西昌卫星发射中心成功发射第五十七颗、五十八颗北斗导航卫星。 一、阅读理解 A When you open a map on your phone, you might think it is guided by the Global Positioning System (GPS) without thinking twice. However, nowadays, most of this service in China uses the Beidou Navigation Satellite System (BDS，北斗卫星导航系统). China started to build the BDS 30 years ago. Back in 1978, the US already started providing navigation services with its GPS. However, relying on a navigation system from another country is unsafe. In 1994, China started to create its own navigation system, Beidou. Named after the Big Dipper constellation (北斗七星), which has guided people for centuries, the mission of the BDS was to make sure China could navigate the future on its own terms. In 2020, after over 20 years of hard work, Beidou completed its global network. The BDS became the fourth global navigation system after the GPS of the United States, Galileo of the European Union and GLONASS of Russia. The BDS is the first navigation satellite system to provide a global short message communication service. It means you can text others in places without phone signal (信号) or internet . For example, in February 2023,a hiker got lost in heavy snow in Inner Mongolia. He sent a text message using the BDS-powered chip in his phone and got rescued in time. Moreover, the Beidou system plays an important role in disaster prevention and response (响应). Rescuers (救援人员) can communicate through the BDS quickly and clearly. It can also helpfarmers plant their crops better. Wherever you are in the world, the BDS can help guide your way. As of 2023, it had provided service for over 120 countries and regions. “By 2035, China will build a positioning, navigation and timing system with the BDS at its core to provide more smart services,” Ran Chengqi, director general of the China Satellite Navigation Office, said at a news meeting in 2018． 1．When did the BDS become the fourth global navigation system? A．1978. B．1994. C．2020. D．2023. 2．Which navigation satellite system is the first to provide a global short message communication service? A．The BDS. B．GLONASS. C．Galileo. D．Global Positioning System. 3．What does the underlined word “mission” mean? A．text B．task C．tool D．tour 4．Which of the following can best help us find out the writer’s purpose? A．Does the writer tell us the disadvantages of the BDS? B．Does the writer introduce the BDS to us? C．Does the writer provide us how to use the BDS? D．Does the writer tell us the further development of the BDS? 【答案】1．C 2．A 3．B 4．B 【知识点】说明文、信息技术 【导语】本文主要介绍了有关北斗卫星导航系统的情况。 1．细节理解题。根据“In 2020, after over 20 years of hard work, Beidou completed its global network. The BDS became the fourth global navigation system after the GPS of the United States, Galileo of the European Union and GLONASS of Russia.”可知，北斗系统于2020年成为第四个全球导航系统。故选C。 2．细节理解题。根据“The BDS is the first navigation satellite system to provide a global short message communication service”可知，北斗系统是首个提供全球短报文通信服务的卫星导航系统。故选A。 3．词义猜测题。根据“was to make sure China could navigate the future on its own terms.”可知，确保中国能够以自己的方式驾驭未来，这是北斗系统的任务，mission和task意思相同，故选B。 4．主旨大意题。本文主要介绍了有关北斗卫星导航系统的情况，所以B选项符合，故选B。 B When you open a map on your phone, you might think it is guided by the Global Positioning System (GPS) without giving it a second thought. However, today, most of the online maps in China uses the Beidou Navigation Satellite System (BDS，北斗卫星导航系统). China started to build the BDS 30 years ago. Back in 1978, the US already started providing navigation services with its GPS. However, depending on a navigation system from another country is not safe. In 2020, after over 20 years of hard work, Beidou completed its global network. The BDS became the fourth global navigation system after the GPS of the United States, Galileo of the European Union and GLONASS of Russia. The BDS is the first navigation satellite system to provide a global short message communication service. It means you can text others in places without phone signal or internet. For example, in February 2023, a hiker got lost in heavy snow in Inner Mongolia. He sent a text message using the BDS-powered chip in his phone and got saved in time. Besides, the Beidou system plays an important role in disaster prevention and response (灾害预防和响应). Rescuers (救援人员) can communicate through the BDS quickly and clearly. No matter where you are in the world, the BDS can help guide your way. By 2023, it had provided service for over 120 countries. “By 2035, China will build a positioning, navigation and timing system with the BDS at its main aim to provide more smart services,” Ran Chengqi, director of the China Satellite Navigation Office, said at a news meeting in 2018. 根据短文内容，判断正 (T)、误 (F)。 5．Today, all the maps on smart phones are guided by GPS. 6．The BDS of China was built later than GPS of the US. 7．The BDS is the fourth navigation satellite system to provide a global short message communication service. 8．The BDS can help people take quicker action if an earthquake happens. 9．The service of BDS had covered over 120 countries by 2023. 【答案】5．F 6．T 7．F 8．T 9．T 【知识点】细节理解、说明文、科学技术 【导语】本文是一篇说明文。文章主要介绍了有关北斗卫星导航系统的情况。 5．细节理解题。根据“However, today, most of the online maps in China uses the Beidou Navigation Satellite System.”可知，今天，中国大多数在线地图使用的是北斗卫星导航系统；题干“如今，所有智能手机上的地图都是由GPS引导的。”与原文不符。故填F。 6．细节理解题。根据“China started to build the BDS 30 years ago. Back in 1978, the US already started providing navigation services with its GPS.”可知，中国从30年前开始建设北斗系统；早在1978年，美国就已经开始使用GPS提供导航服务，也就是说北斗系统建设时间晚于GPS系统建设时间；题干“中国的北斗系统比美国的GPS建造得晚。”符合原文。故填T。 7．细节理解题。根据“The BDS is the first navigation satellite system to provide a global short message communication service.”可知，北斗系统是第一个提供全球短消息通信服务的导航卫星系统；题干“北斗系统是第四个提供全球短信通信服务的导航卫星系统。”与原文不符。故填F。 8．细节理解题。根据“Besides, the Beidou system plays an important role in disaster prevention and response. Rescuers can communicate through the BDS quickly and clearly.”可知，北斗系统在灾害预防和响应中发挥着重要作用，救援人员可以通过北斗系统快速、清晰地进行沟通；题干“如果发生地震，北斗系统可以帮助人们更快地采取行动。”符合原文。故填T。 9．细节理解题。根据最后一段“No matter where you are in the world, the BDS can help guide your way. By 2023, it had provided service for over 120 countries.”可知，到2023年，北斗系统已为120多个国家提供服务；题干“截至2023年，北斗系统服务已覆盖120多个国家。”与原文相符。故填T。 C On November 14, 2023, the International Civil Aviation Organization (ICAO) (国际民用航空组织) officially recognized China’s Bei Dou Satellite Navigation (卫星导航) System (BDS) as the world level. This makes it one of four global satellite navigation systems, along with the United States’ GPS, Russia’s GLONASS and the European Union’s Galileo. China started to develop the BDS in 1994. The system came into use in 2000. After 12 years of work, it began serving the Asia-Pacific region. In 2020, with the global use of BDS-3, China has improved the system to provide users with more correct positioning services, making it a valuable tool for more industries, including transportation, agriculture, and surveying. Now, with 59 satellites in its network, the BDS has served more than 1.5 billion users across the world. Most mobile apps providing maps, navigation and shopping services in China already support the BDS. China’s satellite navigation industry is growing fast. Its value reached more than 500 billion yuan in 2022. That number is expected to double by 2025. In the first half year of 2023, there were about 13.4 million new BDS devices (设备). Nearly 60% were used in transport systems. The rest were used in communication and agriculture. The former made up about 28% and the latter 12%. As BDS gets more popular, it is expected to play an increasingly important role in global navigation and positioning services. 10．What does the underlined word “recognized” in Paragraph 1 probably mean in Chinese? A．研发 B．认可 C．试用 D．提升 11．When did BDS start to serve the Asia-Pacific region? A．1994. B．2000. C．2012. D．2020. 12．What do we know from Paragraph 3? A．It is very expensive to put BDS into use. B．All of the mobile apps in China support the BDS. C．Bei Dou Satellite Navigation System is developing rapidly. D．China’s satellite navigation industry is facing great challenges. 13．In the first half year of 2023, most BDS services were used in ________, A．agriculture B．public safety C．communication D．transport systems 14．Which of the following is TRUE according to the passage? A．BDS has been widely used in many fields. B．BDS has served more users than Russia’s GLONASS. C．BDS began to provide positioning services for people in 1994. D．BDS is the most importantsatellite navigation system in the world. 【答案】10．B 11．C 12．C 13．D 14．A 【知识点】说明文、科学技术、航天与航空 【导语】本文主要介绍了中国的北斗导航系统。 10．词句猜测题。根据“On November 14, 2023, the International Civil Aviation Organization (ICAO) (国际民用航空组织) officially recognized China’s Bei Dou Satellite Navigation (卫星导航) System (BDS) as the world level. This makes it one of four global satellite navigation systems...”可知，这使其成为全球四大卫星导航系统之一，所以是国际民用航空组织正式承认了中国北斗卫星导航系统为世界水平。故选B。 11．细节理解题。根据“China started to develop the BDS in 1994. The system came into use in 2000. After 12 years of work, it began serving the Asia-Pacific region.”可知，北斗系统于2000年投入使用，经过12年的努力，它开始服务于亚太地区。也就是2012年，故选C。 12．细节理解题。根据“China’s satellite navigation industry is growing fast. Its value reached more than 500 billion yuan in 2022. That number is expected to double by 2025. In the first half year of 2023, there were about 13.4 million new BDS devices (设备).”可知，北斗卫星导航系统发展迅速。故选C。 13．细节理解题。根据“In the first half year of 2023, there were about 13.4 million new BDS devices (设备). Nearly 60% were used in transport systems.”可知，2023年上半年，大多数北斗卫星导航设备用于运输系统。故选D。 14．细节理解题。根据“In 2020, with the global use of BDS-3, China has improved the system to provide users with more correct positioning services, making it a valuable tool for more industries, including transportation, agriculture, and surveying.”可知，它已被广泛应用于许多领域。故选A。 D On November 14, 2023, the International Civil Aviation Organization (ICAO) (国际民用航空组织) officially recognized China’s Bei Dou Satellite Navigation (卫星导航) System (BDS) as the world level. This makes it one of four global satellite navigation systems, along with the United States' GPS, Russia’s GLONASS and the European Union’s Galileo. China started to develop the BDS in 1994. The system came into use in 2000. After 12 years of work, it began serving the Asia-Pacific region. In 2020, with the global use of BDS-3, China has improved the system to provide users with more correct positioning services, making it a valuable tool for more industries, including transportation, agriculture, and surveying. Now, with 59 satellites in its network, the BDS has served more than 1.5 billion users across the world. Most mobile apps providing maps, navigation and shopping services in China already support the BDS. China’s satellite navigation industry is growing fast. Its value reached more than 500 billion yuan in 2022. That number is expected to double by 2025. In the first half year of 2023, there were about 13.4 million new BDS devices. Nearly 60% were used in transport systems. The rest were used in communication and agriculture. The former made up about 28%and the latter 12%. As BDS gets more popular, it is expected to play an increasingly important role in global navigation and positioning services. 15．What does the underlined word “devices” in Paragraph 3 probably mean? A．services B．transportation C．communication D．facilities 16．What do we know from Paragraph 3? A．It is very expensive to put BDS into use. B．All of the mobile apps in China support the BDS. C．Bei Dou Satellite Navigation System is developing rapidly. D．China’s satellite navigation industry is facing great challenges. 17．Which of the following is TRUE according to the passage? A．BDS has been widely used in many fields. B．BDS has served more users than Russia’s GLONASS. C．BDS began to provide positioning services for people in 1994. D．BDS is the most important satellite navigation system in the world. 18．What’s the best title for this passage? A．The role of China’s Bei Dou Satellite Navigation System B．The importance of China’s Bei Dou Satellite Navigation System C．The popularity of China’s Bei Dou Satellite Navigation System D．The introduction to China’s Bei Dou Satellite Navigation System 【答案】15．D 16．C 17．A 18．D 【知识点】说明文、科学技术、发明与创造、航天与航空 【导语】本文介绍了中国北斗卫星导航系统的研发过程以及功能。 15．词义猜测题。根据“Nearly 60% were used in transport systems.”可知，此处表示用于运输系统的设施，故选D。 16．推理判断题。根据“Most mobile apps providing maps, navigation and shopping services in China already support the BDS. China’s satellite navigation industry is growing fast.”可知，北斗卫星导航系统发展迅速。故选C。 17．推理判断题。根据“Most mobile apps providing maps, navigation and shopping services in China already support the BDS.”可知，北斗卫星导航系统已广泛应用于多个领域。故选A。 18．标题归纳题。根据“China started to develop the BDS in 1994.”和“As BDS gets more popular, it is expected to play an increasingly important role in global navigation and positioning services.”可知，本文介绍了中国北斗卫星导航系统，故选D。 E China plans to send one to three network backup satellites for the Beidou Navigation Satellite System (BDS) into space this year to improve the stability (稳定性) and usability of the constellation (星座), according to the 13th China Satellite Navigation Conference on Thursday, April 27, 2023. Beidou is a positioning system developed by China. China is the third country in the world to have its own positioning system. With Beidou, China no longer has to depend on foreign systems. This is very important for national safety. Work on Beidou began in 1994. However, the first two Beidou satellites, were not sent into space until 2000. At present, it has 45 satellites in orbit, including 15 for BDS-2 and 30 for BDS-3. These satellites have formed a global network. The complete Beidou will be more powerful than any other positioning system being used all over the world. Yang Changfeng is a designer of Beidou. He says that the system can notice the sway (摇摆) of a building in strong winds. Beidou has brought many advantages in our lives. Let’s take Shanghai as an example. Thousands of buses have been using Beidou. When we are waiting for a bus, we can know when it is about to come. Many smart phones have been using Beidou as well. Many people say, “Let me turn on my GPS.” “In fact, their phones are using Beidou.” jokes a salesperson in Beijing. China will speed up the integration (融合) of BDS with new technologies such as 5G, artificial intelligence and big data. It aims to build a more common, integrated, and intelligent national system of space and time by 2035. The 3-day conference kicked off Wednesday in Beijing. More than 4, 000 experts and scholars from home and abroad in the satellite navigation field attended the conference online and offline. China Daily 28 April 2023 19．When did China send the first two Beidou satellites into space? A．In 1994. B．In 2000. C．In 2023. D．In 2035. 20．What is true about Beidou according to Paragraph 3? A．Beidou can sway buildings in strong winds. B．Beidou is very important for national safety. C．Using Beidou to position buses is convenient. D．GPS will work better than the complete Beidou. 21．What can we infer from the text? A．BDS will probably have 46 to 48 satellites by 2023. B．Over 4, 000 experts and scholars came to Beijing to the conference. C．China started to build its own positioning system in the 19th century. D．Three countries developed their own positioning systems before China. 22．What is the best structure of the text? A．①/②③④⑤ B．①②/③④/⑤ C．①②③/④⑤ D．①/②③④/⑤ 【答案】19．B 20．C 21．A 22．D 【知识点】说明文、科普知识、科学技术 【导语】本文主要介绍了中国的北斗定位系统以及中国计划今年将北斗导航卫星系统的一到三颗网络备份卫星送入太空。 19．细节理解题。根据“However, the first two Beidou satellites, were not sent into space until 2000.”可知，中国在2000年将首批两颗北斗卫星送入太空。故选B。 20．细节理解题。根据“Thousands of buses have been using Beidou. When we are waiting for a bus, we can know when it is about to come”可知，数千辆公交车一直在使用北斗系统。当我们在等公共汽车的时候，我们可以知道它什么时候会来。由此可知，使用北斗定位公交车很方便，故选C。 21．推理判断题。根据第一段以及第二段“At present, it has 45 satellites in orbit, including 15 for BDS-2 and 30 for BDS-3.”可推知， 中国已有45颗在轨卫星，而中国计划在2023年将北斗导航卫星系统的一到三颗网络备份卫星送入太空。由此可推测，在2023年北斗系统可能拥有46至48颗卫星。故选A。 22．篇章结构题。第一段主要讲述了中国计划今年将北斗导航卫星系统的一到三颗网络备份卫星送入太空， 引出话题，为第一部分；第二段到第四段主要介绍北斗定位系统，为第二部分；第五段主要介绍了在北京举行的中国卫星导航会议， 为第三部分。所以文章的结构为：①/②③④/⑤。故选D。 F 请阅读下面短文，从每小题所给的 A、B、C 三个选项中，选出一个最佳选项。 When you open a map on your phone, you might suppose it is guided by the Global Positioning System (GPS)without giving it a second thought. However, nowadays, most of this service now in China uses Beidou Navigation Satellite Systems(BDS). China started to build the BDS thirty years ago. Back in 1978, the US already started providing navigation services with its GPS. However, depending on a navigation system from another country is not safe. In 1994, China started a journey to create its own navigation system, Beidou. Named after the Big Dipper Constellation (北斗七星) , which has guided people for centuries, the BDS was to make sure China could navigate the future on its own terms. In 2020, after over twenty years of hard work, Beidou completed its global (全球的) network. The BDS is the first navigation satellite system to provide a global short message communication service. It means you can text messages in places without phone signal (信号) on the Internet. For example, in February 2023, a hiker got lost in heavy snow. He sent a message using the BDS-powered chip in his phone and got saved in time. No matter where you are in the world, the BDS can help guide your way. Now in 2024, the BDS is used more widely in many fields, especially in the national electronic cars. By 2035, China will build a positioning, navigation and timing system with the BDS. This is not only the insistence on (坚持) the dream but also for the future expectations! 23．Which country does BDS belong to? A．Britain. B．America. C．China. 24．When did China start a journey to create its own navigation system? A．In 1978. B．In 1994. C．In 2020. 25．What does the underlined word “text” mean? A．send B．treat C．drive 26．Why was the example mentioned in the third paragraph? A．To remind people not to get lost. B．To show the new high technology. C．To express people’s love of hiking. 27．What’s the best title of this passage? A．Lead the way with BDS. B．Build the future with BDS. C．Protect the blue sky with BDS. 【答案】23．C 24．B 25．A 26．B 27．B 【知识点】说明文、科学技术 【导语】本文主要介绍了北斗卫星导航系统。 23．细节理解题。根据“China started to build the BDS thirty years ago”可知，北斗卫星导航系统属于中国，故选C。 24．细节理解题。根据“China started to build the BDS thirty years ago”可知，中国30年前就开始建设北斗，也就是在1994年，故选B。 25．词义猜测题。根据“messages in places without phone signal (信号) on the Internet.”可知，此处是指发信息，text是动词，和send含义相似，故选A。 26．推理判断题。根据“For example, in February 2023, a hiker got lost in heavy snow. He sent a message using the BDS-powered chip in his phone and got saved in time”例如，在2023年2月，一名徒步旅行者在大雪中迷路。他用手机里的北斗芯片发送了一条信息，并及时获救。由此可知，这个例子是为了展示新的高科技。故选B。 27．最佳标题题。根据“By 2035, China will build a positioning, navigation and timing system with the BDS. This is not only the insistence on (坚持) the dream but also for the future expectations!”可知，本文主要介绍了北斗卫星导航系统，所以B选项“用北斗系统建设未来。”最贴切。故选B。 G 阅读下面材料，在题中所给的A、B、C、D四个选项中选择一个正确选项。 Thirty years ago, China started to build its own navigation satellite (卫星导航) system, Beidou. It took its name from the Big Dipper stars, which are the guiding light for people around the world. In 1994, China began making the Beidou Navigation Satellite System (BDS), so it wouldn’t have to use navigation systems from other countries. It’s a lot safer this way. In 2020, after over 20 years of hard work, Beidou completed its global (全球的) network. This achievement placed China among the group of countries and areas with their own global navigation network. The US, Russia and the European Union are the other three. Beidou does not just show where you are. It’s also the first to let you send texts where there’s no phone signal (信号) or Internet. For example, you can use it to send messages to others in a deep mountain. The Beidou system has played an important role in disaster prevention. The BDS even helps farmers in China by providing exact information for planting and making farming wiser. The BDS is more than a system. It shows China’s power in science and technology. Now, over 120 countries and areas are using it. Wherever you are, Beidou is there to help you find your way. 28．When did Beidou complete its global network? A．In 1994. B．In 2004. C．In 2020. D．In 2024. 29．A group of countries and areas have their own global navigation network EXCEPT ________. A．USA B．Japan C．Russia D．the European Union 30．According to the passage, we know Beidou system can be used in ________. ①traffic               ②farming               ③disaster prevention               ④ music A．①②③ B．①②④ C．①③④ D．②③④ 31．This passage most probably comes from ________. A．a postcard B．a story book C．a diary D．a magazine 【答案】28．C 29．B 30．A 31．D 【知识点】说明文、科学技术 【导语】本文主要介绍了北斗卫星导航系统。 28．细节理解题。根据“In 2020, after over 20 years of hard work, Beidou completed its global (全球的) network.”可知在2020年，北斗完成了全球组网。故选C。 29．细节理解题。根据“This achievement placed China among the group of countries and areas with their own global navigation network. The US, Russia and the European Union are the other three.”可知中国、美国、俄罗斯和欧盟拥有自己的全球导航网络。故选B。 30．细节理解题。根据“Beidou does not just show where you are...”可知北斗可以用在交通方面；根据“The Beidou system has played an important role in disaster prevention. The BDS even helps farmers in China by providing exact information for planting and making farming wiser.”可知北斗系统在防灾方面发挥了重要作用，甚至通过提供准确的种植信息和提高农业智慧来帮助中国农民。故选A。 31．推理判断题。本文主要介绍了北斗卫星导航系统，故文章可能来自一本杂志。故选D。 H ①April 24, 2024 was the 9th Space Day of China and this marked the 30th year of China’s Bei Dou Satellite Navigation System (卫星导航系统) (the BDS). ②Let’s first get to know the background, steps, and meaning of developing the BDS. ③In the late 20th century, China started to explore how to develop a navigation satellite system suitable for its national conditions. The BDS has been independently developed by China to meet the needs of the country’s national safety and development. ④During that time, China gradually made a three-step plan of development: to complete the development of the BDS-1 and provide services to the whole country by the end of 2000; to complete the development of the BDS-2 and provide services to the Asia-Pacific region (亚太地区) by the end of 2012; and to complete the development of the BDS and provide services worldwide around 2020. ⑤The BDS is one of four international satellite navigation systems, along with the United States’ GPS, Russia’s GLONASS and the European Union’s Galileo. As the BDS joins hands with other navigation satellite systems, China will work with all other countries to make the BDS better serve the world and benefit humans. That’s the meaning of developing the BDS. ⑥The BDS have two main advantages. The other three systems have 24 satellites. China’s BDS has six more satellites. This can improve the BDS’ accuracy (精准度) in China and the Asia-Pacific region to 5 meters, compared with a 10-meter accuracy in other areas. ⑦The BDS has another advantage—the short message service. It allows users to have two-way communication. In areas that are not covered by communication signals (信号), users can send short messages, even in deserts and forests. ⑧Almost all of us have used the BDS for positioning with our smartphones. But how do our phones know where in the world. The Beidou system has been used in: we are and in which direction we are going? The satellites in space help our phones calculate our position. Besides positioning, the BDS is also widely used in our daily life. 32．Which paragraph does the picture on the left mainly support? A．Paragraph 4. B．Paragraph 5. C．Paragraph 6. D．Paragraph 8. 33．What can we infer from the passage? A．The BDS is the pride of China. B．The BDS will change the education in China. C．The BDS has been used in every field of our life. D．There are four international satellite navigation systems. 34．What does the underlined word “calculate” probably mean according to the dictionary? calculate /′kælkjuleɪt/ verb. A．to form an opinion about something B．to specially design a product or an event C．to use numbers to find out a total number D．to work out the results according to the information 35．What’s the structure of the passage? A． B． C． D． 【答案】32．D 33．A 34．D 35．A 【知识点】说明文、科学技术 【导语】本文主要介绍了有关北斗卫星导航系统开发的背景、步骤及意义。 32．推理判断题。根据图片可知，这是在介绍北斗系统用于哪些方面，结合文章第八段“The Beidou system has been used in: we are and in which direction we are going? The satellites in space help our phones calculate our position. Besides positioning, the BDS is also widely used in our daily life.”可知，第八段是讲北斗导航系统的适用范围，因此是支持第八段的内容。故选D。 33．推理判断题。根据“The other three systems have 24 satellites. China’s BDS has six more satellites. This can improve the BDS’ accuracy (精准度) in China and the Asia-Pacific region to 5 meters, compared with a 10-meter accuracy in other areas.”可知，其他三个系统拥有24颗卫星。中国的北斗卫星导航系统比其他三个导航系统还多6颗卫星。这可以将北斗系统在中国和亚太地区的精准度提高到5米，而其他地区只有10米。因此可推知，北斗卫星导航系统是中国的骄傲。故选A。 34．词义猜测题。根据“we are and in which direction we are going? The satellites in space help our phones calculate our position.”可知，卫星帮助我们的手机计算出我们的位置，因此划线单词表示“计算出”。故选D。 35．篇章结构题。第一段引出北斗卫星导航系统这一话题；第二段引出下文，第三到五段具体介绍北斗卫星导航系统的背景、步骤和意义；第六、七段介绍北斗卫星导航系统的两个主要优势；第八段介绍北斗卫星导航系统的适用范围。因此A选项符合其结构。故选A。 I On November 14, 2023, the International Civil Aviation Organization (ICAO) (国际民用航空组织) officially recognized China’s Bei Dou Satellite Navigation (卫星导航) System(BDS) as the world level. This makes it one of four global satellite navigation systems, along with the United States’ GPS, Russia’s GLONASS and the European Union’s Galileo. China started to develop the BDS in 1994. The system came into use in 2000. After 12 years of work, it began serving the Asia-Pacific region. In 2020, with the global use of BDS-3, China has improved the system to provide users with more correct positioning services, making it a valuable tool for more industries, including transportation, agriculture, and surveying. Now, with 59 satellites in its network, the BDS has served more than 1. 5 billion users across the world. Most mobile apps providing maps, navigation and shopping services in China already support the BDS. China’s satellite navigation industry is growing fast. Its value reached more than 500 billion yuan in 2022. That number is expected to double by 2025. In the first half year of 2023, there were about 13. 4 million new BDS devices (设备) . Nearly 60% were used in transport systems. The rest were used in communication and agriculture. The former made up about 28% and the latter 12%. As BDS gets more popular, it is expected to play an increasingly important role in global navigation and positioning services. 36．What does the underlined word “recognized” in Paragraph 1 probably mean in Chinese? A．studied B．accept C．try D．improve 37．What do we know from Paragraph 3? A．It is very expensive to put BDS into use. B．All of the mobile apps in China support the BDS. C．Bei Dou Satellite Navigation System is developing rapidly. D．China’s satellite navigation industry is facing great challenges. 38．In the first half year of 2023, most BDS services were used in ________. A．agriculture B．public safety C．communication D．transport systems 39．Which of the following is TRUE according to the passage? A．BDS has been widely used in many fields. B．BDS has served more users than Russia’s GLONASS. C．BDS began to provide positioning services for people in 1994. D．BDS is the most important satellite navigation system in the world. 【答案】36．B 37．C 38．D 39．A 【知识点】说明文、发明与创造、科学技术 【导语】本文主要介绍了中国的北斗导航系统。 36．词句猜测题。此句“On November 14, 2023, the International Civil Aviation Organization (ICAO) (国际民用航空组织) officially recognized China’s Bei Dou Satellite Navigation (卫星导航) System(BDS) as the world level.”句意为“2023年11月14日，国际民用航空组织正式承认中国北斗卫星导航系统为世界水平。”由此可知，recognized意为“承认，认可，接受”。故选B。 37．细节理解题。根据“China’s satellite navigation industry is growing fast. Its value reached more than 500 billion yuan in 2022. That number is expected to double by 2025. In the first half year of 2023, there were about 13. 4 million new BDS devices (设备).”可知，北斗卫星导航系统发展迅速。故选C。 38．细节理解题。根据第三段“In the first half year of 2023, there were about 13. 4 million new BDS devices (设备) . Nearly 60% were used in transport systems.”可知，2023年上半年，大多数北斗卫星导航设备用于运输系统。故选D。 39．细节理解题。根据第二段“In 2020, with the global use of BDS-3, China has improved the system to provide users with more correct positioning services, making it a valuable tool for more industries, including transportation, agriculture, and surveying.”可知，它已被广泛应用于许多领域。故选A。 J This year, we celebrate 30 years since China started to build its Beidou Navigation Satellite System (BDS, 北斗卫星导航系统). It took its name from the Big Dipper stars, a group of seven bright stars in the sky. In 1994, China began building the BDS, so it wouldn’t have to use navigation systems from other countries. It’s a lot safer this way. In 2020, the BDS was completed. This achievement made China the fourth to have its own navigation system after the US, Russia and the European Union. The BDS does not just show where you are. It’s the first to let you send messages where there is no phone signal (信号). It has also played an important role in disaster prevention and response (防灾救灾). It even helps farmers in China by providing information for planting, which makes farming smarter. The BDS is more than a system. It shows China’s ability in science and technology. Now, over 120 countries and areas are using it. Wherever you are, the BDS is there to help you find your way. 40．Where did the BDS get its name from? A．A country. B．A group of stars. C．A planet. D．An invention. 41．When did China begin building the BDS? A．In 1994. B．In 2000. C．In 2020. D．In 2024. 42．What is paragraph 3 mainly about? A．The advantages of the BDS. B．The ways to make farming smarter. C．The suggestions on repairing the BDS. D．The methods of preventing disasters. 43．What does the BDS show about China? A．Its work in protecting nature. B．Its development in education. C．Its ability in science and technology. D．Its achievements in making phones. 【答案】40．B 41．A 42．A 43．C 【知识点】科学技术、说明文 【导语】本文主要介绍了北斗卫星导航系统。 40．细节理解题。根据“It took its name from the Big Dipper stars, a group of seven bright stars in the sky.”可知它的名字来自北斗七星，一组天空中的七颗明亮的恒星。故选B。 41．细节理解题。根据“In 1994, China began building the BDS”可知1994年，中国开始建造北斗卫星导航系统。故选A。 42．主旨大意题。根据“The BDS does not just show where you are. It’s the first to let you send messages where there is no phone signal”可知本段主要介绍了北斗卫星导航系统的用处。故选A。 43．细节理解题。根据“It shows China’s ability in science and technology”可知它展示了中国的科技实力。故选C。 K In our modern age, we do not think much about how our technology works. We are so used to tapping on our phone screen to get a map of our location. But how do our phones know where in the world we are and in which direction we are going? It is all thanks to the satellites in space that help our phones calculate our position. Depending on where you are around the world, your phone may be receiving data from different systems. In Europe, people have the Galileo system. In Russia, they have GLONASS. In the USA, people use GPS. China, meanwhile, has the Bei Dou Navigation Satellite System (BDS). The BDS in operation today is more advanced than the first version (版本) of the system, which was sent into space in 2000. The present version has better technology and more satellites. The system is not finished, though. When it is completed, there will be lots of BDS satellites. In the future, those satellites will allow us to discover the position of objects with millimetre accuracy (精确度): that is ten times more accurate than GPS. Even though more satellites are being added to the system, the BDS has already been put to use. More than 40,000 Chinese fishing boats are using the system now. These boats are very helpful in search and rescue operations (营救行动) at sea. They are able to communicate with support services on land as well as give the exact locations of ships in trouble. The BDS is being used on land as well. Of course, it’s not hard to imagine how the system is helping the police and firefighters do their job. Agriculture is another area where there are applications for the system. Farmers are able to put the data to good use when operating smart farming equipment. For example, the BDS can be used to control driverless tractors as they turn up the fields. Farmers are also using drones (无人机) 10 check the health of crops and spread seeds over fields. Although the BDS is of Chinese origin (起源), the developers have said that “China’s BeiDou is the world’s Bei Dou”, and they are actively developing international cooperation. Developers predict that the system will not only grow in popularity within China, but overseas as well. And when the system is complete and fully operational in the years to come, the BDS will undoubtedly bring lots of advantages to China and the rest of the world. 44．What does the underlined word “calculate” probably mean according to the dictionary? calculate /ˈkælkjuleɪt/ verb ① to solve the meaning of something ② to form an opinion about something ③ to specially design a product or an event ④ to work out the results according to the data or clues A．① B．② C．③ D．④ 45．How does the writer show the changes in the BDS in Paragraph 2? A．By showing steps. B．By telling stories. C．By listing numbers. D．By comparing versions. 46．What is the best title for the passage? A．Next up, the BDS B．Get away, the BDS C．Look back, the BDS D．Slow down, the BDS 【答案】44．D 45．D 46．A 【知识点】说明文、科学技术 【导语】本文主要介绍了中国的北斗系统以及未来的发展趋势。 44．词句猜测题。根据“Depending on where you are around the world, your phone may be receiving data from different systems.”可知，卫星帮助我们的手机计算我们的位置。所以“calculate”是根据数据或线索给出结果。故选D。 45．推理判断题。根据“The BDS in operation today is more advanced than the first version (版本) of the system, which was sent into space in 2000. The present version has better technology and more satellites.”可知，目前运行的北斗系统比2000年送入太空的第一版系统更先进。这是通过比较条件显示北斗系统的变化。故选D。 46．标题归纳题。本文主要介绍了中国的北斗系统以及未来的发展趋势。所以应该是“Next up, the BDS”更符合。故选A。 L China has completed its BeiDou Navigation Satellite System (卫星导航系统), or BDS, becoming another one in the world with a global navigation network (全球导航网络), the other three being GPS of the US, GLONASS of Russia and Galileo of the European Union. As the name suggests, the global navigation satellite system provides navigation and location services 24 hours a day. From what we have known so far, building a good satellite system costs a lot. Besides, the other systems have been set up. Why does China have a new one if there is nothing special? The other three systems have 24 satellites in MEO. As the 24 satellites, China’s new global navigation satellite system BeiDou-3 also has three satellites in GEO and three in IGSO. What’s special about these six satellites is that they have a relatively fixed area of activity. This can improve BDS’accuracy (精准度) in China and the Asia Pacific to 5 meters, compared with a10-meter accuracy in other areas. BDS has another advantage—the short message service. It allows users to have a two-way communication. In areas not covered by communication signals, BDS can make the short message service available in uninhabited areas, such as deserts, forests, mountainous and polar areas, With this service, users who are in danger can tell the rescue team (救援队) their location and condition. As the most populous country in the world, it’s important for China to have its own global navigation satellite system to meet the needs of the country’s development. In fact, BDS is also good business. According to the official report, China’s satellite industry has kept a 20% yearly growth since 2012. And BDS contributes (贡献) about 80% of it. Also, BDS has also created countless high-paying jobs. And with continuous improvement, it will have much more to offer in the future. MEO: 中轨道       GEO: 地球静止同步轨道      IGSO: 倾斜地球同步轨道 47．BDS is the ________ global navigation network in the world. A．third B．fourth C．fifth D．sixth 48．How many satellites does BeiDou-3 have in total? A．24. B．27. C．30. D．36. 49．What does the underlined word “uninhabited” in Paragraph 4 mean? A．It describes a place that is very high. B．It describes a place impossible to get to. C．It describes a place with lots of animals. D．It describes a place with no people living in it. 50．Which of the following is TRUE about China’s BDS? A．It can only be used in China. B．It has encouraged China’s social development. C．It has caused a number of people to lose their jobs. D．It doesn’t work in areas where there is no communication signal. 【答案】47．B 48．C 49．D 50．B 【知识点】说明文、科学技术、科普知识、发明与创造 【导语】本文主要讲述了中国自主研发的北斗卫星导航系统成为在美国的GPS，俄罗斯的GLONASS及欧盟伽利略后第四个全球卫星导航系统。文章还描述了北斗卫星导航系统的诸多优点和意义。 47．细节理解题。根据“China has completed its BeiDou Navigation Satellite System (卫星导航系统), or BDS, becoming another one in the world with a global navigation network (全球导航网络), the other three being GPS of the US, GLONASS of Russia and Galileo of the European Union.”可知，中国自主研发的北斗卫星导航系统BDS成为继美国的GPS，俄罗斯的GLONASS及欧盟伽利略之后的第四个全球卫星导航系统。故选B。 48．推理判断题。根据“As the 24 satellites, China’s new global navigation satellite system BeiDou-3 also has three satellites in GEO and three in IGSO.”可知，除了24颗卫星，中国新的全球卫星导航系统北斗三号也有3颗地球静止同步轨道卫星和3颗倾斜地球同步轨道卫星。总共是24+3+3=30。故选C。 49．词句猜测题。根据“such as deserts, forests, mountainous and polar areas”可知，沙漠，森林，山脉和极地，这些地方的共性是没有人住。故选D。 50．细节理解题。根据“In fact, BDS is also good business. According to the official report, China’s satellite industry has kept a 20% yearly growth since 2012. And BDS contributes (贡献) about 80% of it.”可知，自2012年以来，中国卫星工业一直保持着20%的年增长率，BDS贡献了约80%。由此可知，中国的BDS促进了中国的社会发展。故选B。 M On November 14, 2023, the International Civil Aviation Organization (ICAO) officially acknowledged (承认) China’s Bei Dou satellite Navigation System (BDS) as a global (全球的) standard. This acknowledgement places it among the top group of global satellite navigation systems, sharing the stage with the United States’ GPS, Russia’s GLONASS, and the European Union’s Galileo. China began working on the BDS in 1994. The system became operational in 2000. After 12 years of development, it started helping people in the Asia-Pacific area. By 2020, with BDS-3 being used all over the world, China improved the system to offer more accurate (精确的) positioning services. This improvement has made it a valuable tool for different kinds of industries, including transportation, farming, and land measuring. Now, the BDS, with its 59 satellites, has served more than 1.5 billion users around the world. In China, most mobile apps that provide maps, navigation, and shopping services already support the BDS. The country’s satellite navigation industry is growing quickly, with its value reaching more than 500 billion yuan in 2022 — an amount expected to double by 2025. In the first six months of 2023, about 13.4 million new BDS devices (设备) were introduced. Nearly 60% of these devices have been used in transportation, while the rest support communication and farming. About 28% are used for communication and 12% for farming. As BDS gets more popular, it is expected to play an increasingly important role in global navigation and positioning services. 51．Which systems is BDS similar to after being acknowledged by ICAO? A．GPS, GLONASS, Galileo. B．GPS, Galileo, satellites. C．Galileos, mobile apps, maps. D．GLONASS, maps, navigation. 52．When did BDS-3 start offering improved global services? A．By 1994. B．By 2000. C．By 2012. D．By 2020. 53．What can we infer from the Paragraph 3? A．The apps are all supported by the BDS. B．The BDS devices went global in 2023. C．The global use of the BDS is increasing. D．Farming uses the BDS the most in China. 54．What is the expected value of China’s satellite navigation industry by 2025? A．500 billion yuan. B．10,000 billion yuan. C．60% of the 2022 value. D．Double the 2023 value. 55．Where is the text most probably from? A．A science textbook. B．A daily newspaper. C．An industry report. D．A farming magazine. 【答案】51．A 52．D 53．C 54．B 55．B 【知识点】说明文、科学技术、科普知识 【导语】本文主要介绍了中国的北斗导航系统。 51．细节理解题。根据“This acknowledgement places it among the top group of global satellite navigation systems, sharing the stage with the United States’ GPS, Russia’s GLONASS, and the European Union’s Galileo.”可知，得到国际民航组织认可后，北斗系统与美国的GPS、俄罗斯的GLONASS和欧盟的伽利略系统同台，故选A。 52．细节理解题。根据“By 2020, with BDS-3 being used all over the world, China improved the system to offer more accurate (精确的) positioning services.”可知，到2020年，随着北斗三号系统在全球范围内的使用，中国对该系统进行了改进，以提供更准确的定位服务。故选D。 53．细节理解题。根据“In China, most mobile apps that provide maps, navigation, and shopping services already support the BDS. The country’s satellite navigation industry is growing quickly, with its value reaching more than 500 billion yuan in 2022...”可知，北斗系统的使用正在增加。故选C。 54．细节理解题。根据“The country’s satellite navigation industry is growing quickly, with its value reaching more than 500 billion yuan in 2022 — an amount expected to double by 2025.”可知，我国的卫星导航产业发展迅速，到2022年其价值将超过5000亿元，预计到2025年将翻一番。故选B。 55．推理判断题。根据“As BDS gets more popular, it is expected to play an increasingly important role in global navigation and positioning services.”以及整个文章的理解可知，主要介绍了中国的北斗导航系统的情况，应该是在报纸上能看到，故选B。 二、任务型阅读 A The world is full of amazing things. Let’s see China’s amazing technology! Nowadays, we are used to using our phone to get a map of our location. But how do our phones know where in the world we are and in which direction we are going? It is all thanks to the satellites in space that help our phones calculate (计算) our position. Depending on where you are around the world, your phone may be receiving data from different systems. That’s how the BeiDou Navigation Satellite System (BDS) works in China. The BDS nowadays is more advanced than the first version (版本) of the system, which was sent into space in 2000. The present version has better technology and more satellites. When the system is finished, there will be lots of BDS satellites. In the future, those satellites will allow us to discover the position of objects with millimetre accuracy (精确度). Even though more satellites are being added to the system, the BDS has already been put to use. More than 40,000 Chinese fishing boats are using the system now. These boats are easily to be searched at sea. They are able to communicate with people on land as well as give the exact locations of ships in trouble. The BDS is being used on land as well. Of course, it’s not hard to imagine how the system is helping the police do their job. So does farming. Farmers are able to put the data to good use when operating smart farming machines. For example, the BDS can be used to control driverless trucks as they turn up the fields. Farmers are also using drones (无人机). Although the BDS is a product of China, the developers are actively developing international cooperation. Developers predict that the system will be not only popular within China, but overseas as well. The BDS will undoubtedly (无疑) bring lots of advantages to China and the rest of the world. 1、2题完成句子；3~5题简略回答问题。 56．Thanks to the satellites in space that help our phones to know where we are and we are going. 57．Chinese fishing boats are using the system to on land. 58．When was the first version of the BDS sent into space? . 59．According to the passage, which groups of people are using the BDS to work? . 60．What do you think of the BDS? How do you feel after reading the article? . 【答案】56．in which direction 57．communicate with people 58．In 2000/It was sent into space in 2000. 59．Fishermen, police and farmers. 60．I think it’s amazing. I’m very proud of our technology. (言之有理即可) 【知识点】说明文、科学技术 【导语】本文主要介绍了中国的卫星导航系统——北斗导航卫星系统（BDS）。 56．根据“But how do our phones know where in the world we are and in which direction we are going? It is all thanks to the satellites in space that help our phones calculate (计算) our position. ”可知，多亏了太空中的卫星帮助我们的手机知道我们在哪里，我们要去哪个方向。故填in which direction。 57．根据“More than 40,000 Chinese fishing boats are using the system now. These boats are easily to be searched at sea. They are able to communicate with people on land as well as give the exact locations of ships in trouble.”可知，中国渔船使用该系统与陆地上的人沟通，不定式符号to后跟动词原形，故填communicate with people。 58．根据“The BDS nowadays is more advanced than the first version (版本) of the system, which was sent into space in 2000.”可知，第一版系统是在2000年被送入太空的，故填In 2000/It was sent into space in 2000. 59．根据“More than 40,000 Chinese fishing boats are using the system now. ”、“Of course, it’s not hard to imagine how the system is helping the police do their job. So does farming. Farmers are able to put the data to good use when operating smart farming machines. ”可知，渔民、警察和农民在使用北斗系统，故填Fishermen, police and farmers. 60．开放性问题，答案合理即可。参考答案：I think it’s amazing. I’m very proud of our technology. B 根据短文内容，回答问题。（每题答案不超过8个词） On November 14, 2023, the International Civil Aviation Organization (ICAO) (国际民用航空组织) officially recognized China’s Bei Dou Satellite Navigation (卫星导航) System (BDS) as the world level. This makes it one of four global (全球的) satellite navigation systems, along with the United States’ GPS, Russia’s GLONASS and the European Union’s Galileo. China started to develop the BDS in 1994. The system came into use in 2000. After 12 years of work, it began serving the Asia-Pacific region. In 2020, with the global use of BDS-3, China has improved the system to provide users with more correct positioning services, making it a valuable tool for more industries, including transportation, agriculture, and surveying. Now, with 59 satellites in its network, the BDS has served more than 1.5 billion users across the world. Most mobile apps providing maps, navigation and shopping services in China already support the BDS. China’s satellite navigation industry is growing fast. Its value reached more than 500 billion yuan in 2022. That number is expected to double by 2025. In the first half year of 2023, there were about 13.4 million new BDS devices (设备). Nearly 60% were used in transport systems. The rest were used in communication and agriculture. The former made up about 28% and the later 12%. As BDS gets more popular, it is expected to play an increasingly important role in global navigation and positioning services. 61．Which organization officially recognized China’s Bei Dou Satellite Navigation System as the world level? 62．When did BDS start to serve the Asia-Pacific region? 63．How many users has the BDS served across the world? 64．In the first half year of 2023, were most BDS services used in transport systems? 65．How do you like China’s Bei Dou Satellite Navigation (卫星导航) System (BDS)? 【答案】61．The ICAO. 62．In 2012. 63．More than 1.5 billion. 64．Yes, they were. 65．It’s very useful/great. 【知识点】说明文、科学技术 【导语】本文是一篇说明文，主要介绍了北斗卫生导航的情况。 61．根据“On November 14,2023, the International Civil Aviation Organization (ICAO) (国际民用航空组织) officially recognized China’s Bei Dou Satellite Navigation (卫星导航) System (BDS) as the world level.”可知，是国际民用航空组织承认了北斗卫生导航是世界级的导航。故填The ICAO. 62．根据“The system came into use in 2000. After 12 years of work, it began serving the Asia-Pacific region.”可知，设备在2000年投入使用，在12年后开始服务于亚太地区。故填In 2012. 63．根据“Now, with 59 satellites in its network, the BDS has served more than 1.5 billion users across the world.”可知，目前，北斗系统拥有59颗卫星，为全球超过15亿用户提供服务。故填More than 1.5 billion. 64．根据“In the first half year of 2023, there were about 13.4 million new BDS devices (设备). Nearly 60% were used in transport systems.”可知，在2023年上半年，大约有1340万个新的北斗系统设备，近60%用于运输系统。故填Yes, they were. 65．开放性题目，合理即可。故填It’s very useful/great. 试卷第1页，共3页 试卷第1页，共3页 学科网（北京）股份有限公司 $$ 45 中国北斗导航系统 中国自行研制的全球卫星导航系统 北斗卫星导航系统（BeiDou Navigation Satellite System）是中国自行研制的全球卫星导航系统，也是继GPS、GLONASS之后的第三个成熟的卫星导航系统。 其由空间段、地面段和用户段三部分组成，可在全球范围内全天候、全天时为各类用户提供高精度、高可靠定位、导航、授时服务。 2023年12月26日，中国在西昌卫星发射中心成功发射第五十七颗、五十八颗北斗导航卫星。 一、阅读理解 A When you open a map on your phone, you might think it is guided by the Global Positioning System (GPS) without thinking twice. However, nowadays, most of this service in China uses the Beidou Navigation Satellite System (BDS，北斗卫星导航系统). China started to build the BDS 30 years ago. Back in 1978, the US already started providing navigation services with its GPS. However, relying on a navigation system from another country is unsafe. In 1994, China started to create its own navigation system, Beidou. Named after the Big Dipper constellation (北斗七星), which has guided people for centuries, the mission of the BDS was to make sure China could navigate the future on its own terms. In 2020, after over 20 years of hard work, Beidou completed its global network. The BDS became the fourth global navigation system after the GPS of the United States, Galileo of the European Union and GLONASS of Russia. The BDS is the first navigation satellite system to provide a global short message communication service. It means you can text others in places without phone signal (信号) or internet . For example, in February 2023,a hiker got lost in heavy snow in Inner Mongolia. He sent a text message using the BDS-powered chip in his phone and got rescued in time. Moreover, the Beidou system plays an important role in disaster prevention and response (响应). Rescuers (救援人员) can communicate through the BDS quickly and clearly. It can also helpfarmers plant their crops better. Wherever you are in the world, the BDS can help guide your way. As of 2023, it had provided service for over 120 countries and regions. “By 2035, China will build a positioning, navigation and timing system with the BDS at its core to provide more smart services,” Ran Chengqi, director general of the China Satellite Navigation Office, said at a news meeting in 2018． 1．When did the BDS become the fourth global navigation system? A．1978. B．1994. C．2020. D．2023. 2．Which navigation satellite system is the first to provide a global short message communication service? A．The BDS. B．GLONASS. C．Galileo. D．Global Positioning System. 3．What does the underlined word “mission” mean? A．text B．task C．tool D．tour 4．Which of the following can best help us find out the writer’s purpose? A．Does the writer tell us the disadvantages of the BDS? B．Does the writer introduce the BDS to us? C．Does the writer provide us how to use the BDS? D．Does the writer tell us the further development of the BDS? B When you open a map on your phone, you might think it is guided by the Global Positioning System (GPS) without giving it a second thought. However, today, most of the online maps in China uses the Beidou Navigation Satellite System (BDS，北斗卫星导航系统). China started to build the BDS 30 years ago. Back in 1978, the US already started providing navigation services with its GPS. However, depending on a navigation system from another country is not safe. In 2020, after over 20 years of hard work, Beidou completed its global network. The BDS became the fourth global navigation system after the GPS of the United States, Galileo of the European Union and GLONASS of Russia. The BDS is the first navigation satellite system to provide a global short message communication service. It means you can text others in places without phone signal or internet. For example, in February 2023, a hiker got lost in heavy snow in Inner Mongolia. He sent a text message using the BDS-powered chip in his phone and got saved in time. Besides, the Beidou system plays an important role in disaster prevention and response (灾害预防和响应). Rescuers (救援人员) can communicate through the BDS quickly and clearly. No matter where you are in the world, the BDS can help guide your way. By 2023, it had provided service for over 120 countries. “By 2035, China will build a positioning, navigation and timing system with the BDS at its main aim to provide more smart services,” Ran Chengqi, director of the China Satellite Navigation Office, said at a news meeting in 2018. 根据短文内容，判断正 (T)、误 (F)。 5．Today, all the maps on smart phones are guided by GPS. 6．The BDS of China was built later than GPS of the US. 7．The BDS is the fourth navigation satellite system to provide a global short message communication service. 8．The BDS can help people take quicker action if an earthquake happens. 9．The service of BDS had covered over 120 countries by 2023. C On November 14, 2023, the International Civil Aviation Organization (ICAO) (国际民用航空组织) officially recognized China’s Bei Dou Satellite Navigation (卫星导航) System (BDS) as the world level. This makes it one of four global satellite navigation systems, along with the United States’ GPS, Russia’s GLONASS and the European Union’s Galileo. China started to develop the BDS in 1994. The system came into use in 2000. After 12 years of work, it began serving the Asia-Pacific region. In 2020, with the global use of BDS-3, China has improved the system to provide users with more correct positioning services, making it a valuable tool for more industries, including transportation, agriculture, and surveying. Now, with 59 satellites in its network, the BDS has served more than 1.5 billion users across the world. Most mobile apps providing maps, navigation and shopping services in China already support the BDS. China’s satellite navigation industry is growing fast. Its value reached more than 500 billion yuan in 2022. That number is expected to double by 2025. In the first half year of 2023, there were about 13.4 million new BDS devices (设备). Nearly 60% were used in transport systems. The rest were used in communication and agriculture. The former made up about 28% and the latter 12%. As BDS gets more popular, it is expected to play an increasingly important role in global navigation and positioning services. 10．What does the underlined word “recognized” in Paragraph 1 probably mean in Chinese? A．研发 B．认可 C．试用 D．提升 11．When did BDS start to serve the Asia-Pacific region? A．1994. B．2000. C．2012. D．2020. 12．What do we know from Paragraph 3? A．It is very expensive to put BDS into use. B．All of the mobile apps in China support the BDS. C．Bei Dou Satellite Navigation System is developing rapidly. D．China’s satellite navigation industry is facing great challenges. 13．In the first half year of 2023, most BDS services were used in ________, A．agriculture B．public safety C．communication D．transport systems 14．Which of the following is TRUE according to the passage? A．BDS has been widely used in many fields. B．BDS has served more users than Russia’s GLONASS. C．BDS began to provide positioning services for people in 1994. D．BDS is the most importantsatellite navigation system in the world. D On November 14, 2023, the International Civil Aviation Organization (ICAO) (国际民用航空组织) officially recognized China’s Bei Dou Satellite Navigation (卫星导航) System (BDS) as the world level. This makes it one of four global satellite navigation systems, along with the United States' GPS, Russia’s GLONASS and the European Union’s Galileo. China started to develop the BDS in 1994. The system came into use in 2000. After 12 years of work, it began serving the Asia-Pacific region. In 2020, with the global use of BDS-3, China has improved the system to provide users with more correct positioning services, making it a valuable tool for more industries, including transportation, agriculture, and surveying. Now, with 59 satellites in its network, the BDS has served more than 1.5 billion users across the world. Most mobile apps providing maps, navigation and shopping services in China already support the BDS. China’s satellite navigation industry is growing fast. Its value reached more than 500 billion yuan in 2022. That number is expected to double by 2025. In the first half year of 2023, there were about 13.4 million new BDS devices. Nearly 60% were used in transport systems. The rest were used in communication and agriculture. The former made up about 28%and the latter 12%. As BDS gets more popular, it is expected to play an increasingly important role in global navigation and positioning services. 15．What does the underlined word “devices” in Paragraph 3 probably mean? A．services B．transportation C．communication D．facilities 16．What do we know from Paragraph 3? A．It is very expensive to put BDS into use. B．All of the mobile apps in China support the BDS. C．Bei Dou Satellite Navigation System is developing rapidly. D．China’s satellite navigation industry is facing great challenges. 17．Which of the following is TRUE according to the passage? A．BDS has been widely used in many fields. B．BDS has served more users than Russia’s GLONASS. C．BDS began to provide positioning services for people in 1994. D．BDS is the most important satellite navigation system in the world. 18．What’s the best title for this passage? A．The role of China’s Bei Dou Satellite Navigation System B．The importance of China’s Bei Dou Satellite Navigation System C．The popularity of China’s Bei Dou Satellite Navigation System D．The introduction to China’s Bei Dou Satellite Navigation System E China plans to send one to three network backup satellites for the Beidou Navigation Satellite System (BDS) into space this year to improve the stability (稳定性) and usability of the constellation (星座), according to the 13th China Satellite Navigation Conference on Thursday, April 27, 2023. Beidou is a positioning system developed by China. China is the third country in the world to have its own positioning system. With Beidou, China no longer has to depend on foreign systems. This is very important for national safety. Work on Beidou began in 1994. However, the first two Beidou satellites, were not sent into space until 2000. At present, it has 45 satellites in orbit, including 15 for BDS-2 and 30 for BDS-3. These satellites have formed a global network. The complete Beidou will be more powerful than any other positioning system being used all over the world. Yang Changfeng is a designer of Beidou. He says that the system can notice the sway (摇摆) of a building in strong winds. Beidou has brought many advantages in our lives. Let’s take Shanghai as an example. Thousands of buses have been using Beidou. When we are waiting for a bus, we can know when it is about to come. Many smart phones have been using Beidou as well. Many people say, “Let me turn on my GPS.” “In fact, their phones are using Beidou.” jokes a salesperson in Beijing. China will speed up the integration (融合) of BDS with new technologies such as 5G, artificial intelligence and big data. It aims to build a more common, integrated, and intelligent national system of space and time by 2035. The 3-day conference kicked off Wednesday in Beijing. More than 4, 000 experts and scholars from home and abroad in the satellite navigation field attended the conference online and offline. China Daily 28 April 2023 19．When did China send the first two Beidou satellites into space? A．In 1994. B．In 2000. C．In 2023. D．In 2035. 20．What is true about Beidou according to Paragraph 3? A．Beidou can sway buildings in strong winds. B．Beidou is very important for national safety. C．Using Beidou to position buses is convenient. D．GPS will work better than the complete Beidou. 21．What can we infer from the text? A．BDS will probably have 46 to 48 satellites by 2023. B．Over 4, 000 experts and scholars came to Beijing to the conference. C．China started to build its own positioning system in the 19th century. D．Three countries developed their own positioning systems before China. 22．What is the best structure of the text? A．①/②③④⑤ B．①②/③④/⑤ C．①②③/④⑤ D．①/②③④/⑤ F 请阅读下面短文，从每小题所给的 A、B、C 三个选项中，选出一个最佳选项。 When you open a map on your phone, you might suppose it is guided by the Global Positioning System (GPS)without giving it a second thought. However, nowadays, most of this service now in China uses Beidou Navigation Satellite Systems(BDS). China started to build the BDS thirty years ago. Back in 1978, the US already started providing navigation services with its GPS. However, depending on a navigation system from another country is not safe. In 1994, China started a journey to create its own navigation system, Beidou. Named after the Big Dipper Constellation (北斗七星) , which has guided people for centuries, the BDS was to make sure China could navigate the future on its own terms. In 2020, after over twenty years of hard work, Beidou completed its global (全球的) network. The BDS is the first navigation satellite system to provide a global short message communication service. It means you can text messages in places without phone signal (信号) on the Internet. For example, in February 2023, a hiker got lost in heavy snow. He sent a message using the BDS-powered chip in his phone and got saved in time. No matter where you are in the world, the BDS can help guide your way. Now in 2024, the BDS is used more widely in many fields, especially in the national electronic cars. By 2035, China will build a positioning, navigation and timing system with the BDS. This is not only the insistence on (坚持) the dream but also for the future expectations! 23．Which country does BDS belong to? A．Britain. B．America. C．China. 24．When did China start a journey to create its own navigation system? A．In 1978. B．In 1994. C．In 2020. 25．What does the underlined word “text” mean? A．send B．treat C．drive 26．Why was the example mentioned in the third paragraph? A．To remind people not to get lost. B．To show the new high technology. C．To express people’s love of hiking. 27．What’s the best title of this passage? A．Lead the way with BDS. B．Build the future with BDS. C．Protect the blue sky with BDS. G 阅读下面材料，在题中所给的A、B、C、D四个选项中选择一个正确选项。 Thirty years ago, China started to build its own navigation satellite (卫星导航) system, Beidou. It took its name from the Big Dipper stars, which are the guiding light for people around the world. In 1994, China began making the Beidou Navigation Satellite System (BDS), so it wouldn’t have to use navigation systems from other countries. It’s a lot safer this way. In 2020, after over 20 years of hard work, Beidou completed its global (全球的) network. This achievement placed China among the group of countries and areas with their own global navigation network. The US, Russia and the European Union are the other three. Beidou does not just show where you are. It’s also the first to let you send texts where there’s no phone signal (信号) or Internet. For example, you can use it to send messages to others in a deep mountain. The Beidou system has played an important role in disaster prevention. The BDS even helps farmers in China by providing exact information for planting and making farming wiser. The BDS is more than a system. It shows China’s power in science and technology. Now, over 120 countries and areas are using it. Wherever you are, Beidou is there to help you find your way. 28．When did Beidou complete its global network? A．In 1994. B．In 2004. C．In 2020. D．In 2024. 29．A group of countries and areas have their own global navigation network EXCEPT ________. A．USA B．Japan C．Russia D．the European Union 30．According to the passage, we know Beidou system can be used in ________. ①traffic               ②farming               ③disaster prevention               ④ music A．①②③ B．①②④ C．①③④ D．②③④ 31．This passage most probably comes from ________. A．a postcard B．a story book C．a diary D．a magazine H ①April 24, 2024 was the 9th Space Day of China and this marked the 30th year of China’s Bei Dou Satellite Navigation System (卫星导航系统) (the BDS). ②Let’s first get to know the background, steps, and meaning of developing the BDS. ③In the late 20th century, China started to explore how to develop a navigation satellite system suitable for its national conditions. The BDS has been independently developed by China to meet the needs of the country’s national safety and development. ④During that time, China gradually made a three-step plan of development: to complete the development of the BDS-1 and provide services to the whole country by the end of 2000; to complete the development of the BDS-2 and provide services to the Asia-Pacific region (亚太地区) by the end of 2012; and to complete the development of the BDS and provide services worldwide around 2020. ⑤The BDS is one of four international satellite navigation systems, along with the United States’ GPS, Russia’s GLONASS and the European Union’s Galileo. As the BDS joins hands with other navigation satellite systems, China will work with all other countries to make the BDS better serve the world and benefit humans. That’s the meaning of developing the BDS. ⑥The BDS have two main advantages. The other three systems have 24 satellites. China’s BDS has six more satellites. This can improve the BDS’ accuracy (精准度) in China and the Asia-Pacific region to 5 meters, compared with a 10-meter accuracy in other areas. ⑦The BDS has another advantage—the short message service. It allows users to have two-way communication. In areas that are not covered by communication signals (信号), users can send short messages, even in deserts and forests. ⑧Almost all of us have used the BDS for positioning with our smartphones. But how do our phones know where in the world. The Beidou system has been used in: we are and in which direction we are going? The satellites in space help our phones calculate our position. Besides positioning, the BDS is also widely used in our daily life. 32．Which paragraph does the picture on the left mainly support? A．Paragraph 4. B．Paragraph 5. C．Paragraph 6. D．Paragraph 8. 33．What can we infer from the passage? A．The BDS is the pride of China. B．The BDS will change the education in China. C．The BDS has been used in every field of our life. D．There are four international satellite navigation systems. 34．What does the underlined word “calculate” probably mean according to the dictionary? calculate /′kælkjuleɪt/ verb. A．to form an opinion about something B．to specially design a product or an event C．to use numbers to find out a total number D．to work out the results according to the information 35．What’s the structure of the passage? A． B． C． D． I On November 14, 2023, the International Civil Aviation Organization (ICAO) (国际民用航空组织) officially recognized China’s Bei Dou Satellite Navigation (卫星导航) System(BDS) as the world level. This makes it one of four global satellite navigation systems, along with the United States’ GPS, Russia’s GLONASS and the European Union’s Galileo. China started to develop the BDS in 1994. The system came into use in 2000. After 12 years of work, it began serving the Asia-Pacific region. In 2020, with the global use of BDS-3, China has improved the system to provide users with more correct positioning services, making it a valuable tool for more industries, including transportation, agriculture, and surveying. Now, with 59 satellites in its network, the BDS has served more than 1. 5 billion users across the world. Most mobile apps providing maps, navigation and shopping services in China already support the BDS. China’s satellite navigation industry is growing fast. Its value reached more than 500 billion yuan in 2022. That number is expected to double by 2025. In the first half year of 2023, there were about 13. 4 million new BDS devices (设备) . Nearly 60% were used in transport systems. The rest were used in communication and agriculture. The former made up about 28% and the latter 12%. As BDS gets more popular, it is expected to play an increasingly important role in global navigation and positioning services. 36．What does the underlined word “recognized” in Paragraph 1 probably mean in Chinese? A．studied B．accept C．try D．improve 37．What do we know from Paragraph 3? A．It is very expensive to put BDS into use. B．All of the mobile apps in China support the BDS. C．Bei Dou Satellite Navigation System is developing rapidly. D．China’s satellite navigation industry is facing great challenges. 38．In the first half year of 2023, most BDS services were used in ________. A．agriculture B．public safety C．communication D．transport systems 39．Which of the following is TRUE according to the passage? A．BDS has been widely used in many fields. B．BDS has served more users than Russia’s GLONASS. C．BDS began to provide positioning services for people in 1994. D．BDS is the most important satellite navigation system in the world. J This year, we celebrate 30 years since China started to build its Beidou Navigation Satellite System (BDS, 北斗卫星导航系统). It took its name from the Big Dipper stars, a group of seven bright stars in the sky. In 1994, China began building the BDS, so it wouldn’t have to use navigation systems from other countries. It’s a lot safer this way. In 2020, the BDS was completed. This achievement made China the fourth to have its own navigation system after the US, Russia and the European Union. The BDS does not just show where you are. It’s the first to let you send messages where there is no phone signal (信号). It has also played an important role in disaster prevention and response (防灾救灾). It even helps farmers in China by providing information for planting, which makes farming smarter. The BDS is more than a system. It shows China’s ability in science and technology. Now, over 120 countries and areas are using it. Wherever you are, the BDS is there to help you find your way. 40．Where did the BDS get its name from? A．A country. B．A group of stars. C．A planet. D．An invention. 41．When did China begin building the BDS? A．In 1994. B．In 2000. C．In 2020. D．In 2024. 42．What is paragraph 3 mainly about? A．The advantages of the BDS. B．The ways to make farming smarter. C．The suggestions on repairing the BDS. D．The methods of preventing disasters. 43．What does the BDS show about China? A．Its work in protecting nature. B．Its development in education. C．Its ability in science and technology. D．Its achievements in making phones. K In our modern age, we do not think much about how our technology works. We are so used to tapping on our phone screen to get a map of our location. But how do our phones know where in the world we are and in which direction we are going? It is all thanks to the satellites in space that help our phones calculate our position. Depending on where you are around the world, your phone may be receiving data from different systems. In Europe, people have the Galileo system. In Russia, they have GLONASS. In the USA, people use GPS. China, meanwhile, has the Bei Dou Navigation Satellite System (BDS). The BDS in operation today is more advanced than the first version (版本) of the system, which was sent into space in 2000. The present version has better technology and more satellites. The system is not finished, though. When it is completed, there will be lots of BDS satellites. In the future, those satellites will allow us to discover the position of objects with millimetre accuracy (精确度): that is ten times more accurate than GPS. Even though more satellites are being added to the system, the BDS has already been put to use. More than 40,000 Chinese fishing boats are using the system now. These boats are very helpful in search and rescue operations (营救行动) at sea. They are able to communicate with support services on land as well as give the exact locations of ships in trouble. The BDS is being used on land as well. Of course, it’s not hard to imagine how the system is helping the police and firefighters do their job. Agriculture is another area where there are applications for the system. Farmers are able to put the data to good use when operating smart farming equipment. For example, the BDS can be used to control driverless tractors as they turn up the fields. Farmers are also using drones (无人机) 10 check the health of crops and spread seeds over fields. Although the BDS is of Chinese origin (起源), the developers have said that “China’s BeiDou is the world’s Bei Dou”, and they are actively developing international cooperation. Developers predict that the system will not only grow in popularity within China, but overseas as well. And when the system is complete and fully operational in the years to come, the BDS will undoubtedly bring lots of advantages to China and the rest of the world. 44．What does the underlined word “calculate” probably mean according to the dictionary? calculate /ˈkælkjuleɪt/ verb ① to solve the meaning of something ② to form an opinion about something ③ to specially design a product or an event ④ to work out the results according to the data or clues A．① B．② C．③ D．④ 45．How does the writer show the changes in the BDS in Paragraph 2? A．By showing steps. B．By telling stories. C．By listing numbers. D．By comparing versions. 46．What is the best title for the passage? A．Next up, the BDS B．Get away, the BDS C．Look back, the BDS D．Slow down, the BDS L China has completed its BeiDou Navigation Satellite System (卫星导航系统), or BDS, becoming another one in the world with a global navigation network (全球导航网络), the other three being GPS of the US, GLONASS of Russia and Galileo of the European Union. As the name suggests, the global navigation satellite system provides navigation and location services 24 hours a day. From what we have known so far, building a good satellite system costs a lot. Besides, the other systems have been set up. Why does China have a new one if there is nothing special? The other three systems have 24 satellites in MEO. As the 24 satellites, China’s new global navigation satellite system BeiDou-3 also has three satellites in GEO and three in IGSO. What’s special about these six satellites is that they have a relatively fixed area of activity. This can improve BDS’accuracy (精准度) in China and the Asia Pacific to 5 meters, compared with a10-meter accuracy in other areas. BDS has another advantage—the short message service. It allows users to have a two-way communication. In areas not covered by communication signals, BDS can make the short message service available in uninhabited areas, such as deserts, forests, mountainous and polar areas, With this service, users who are in danger can tell the rescue team (救援队) their location and condition. As the most populous country in the world, it’s important for China to have its own global navigation satellite system to meet the needs of the country’s development. In fact, BDS is also good business. According to the official report, China’s satellite industry has kept a 20% yearly growth since 2012. And BDS contributes (贡献) about 80% of it. Also, BDS has also created countless high-paying jobs. And with continuous improvement, it will have much more to offer in the future. MEO: 中轨道       GEO: 地球静止同步轨道      IGSO: 倾斜地球同步轨道 47．BDS is the ________ global navigation network in the world. A．third B．fourth C．fifth D．sixth 48．How many satellites does BeiDou-3 have in total? A．24. B．27. C．30. D．36. 49．What does the underlined word “uninhabited” in Paragraph 4 mean? A．It describes a place that is very high. B．It describes a place impossible to get to. C．It describes a place with lots of animals. D．It describes a place with no people living in it. 50．Which of the following is TRUE about China’s BDS? A．It can only be used in China. B．It has encouraged China’s social development. C．It has caused a number of people to lose their jobs. D．It doesn’t work in areas where there is no communication signal. M On November 14, 2023, the International Civil Aviation Organization (ICAO) officially acknowledged (承认) China’s Bei Dou satellite Navigation System (BDS) as a global (全球的) standard. This acknowledgement places it among the top group of global satellite navigation systems, sharing the stage with the United States’ GPS, Russia’s GLONASS, and the European Union’s Galileo. China began working on the BDS in 1994. The system became operational in 2000. After 12 years of development, it started helping people in the Asia-Pacific area. By 2020, with BDS-3 being used all over the world, China improved the system to offer more accurate (精确的) positioning services. This improvement has made it a valuable tool for different kinds of industries, including transportation, farming, and land measuring. Now, the BDS, with its 59 satellites, has served more than 1.5 billion users around the world. In China, most mobile apps that provide maps, navigation, and shopping services already support the BDS. The country’s satellite navigation industry is growing quickly, with its value reaching more than 500 billion yuan in 2022 — an amount expected to double by 2025. In the first six months of 2023, about 13.4 million new BDS devices (设备) were introduced. Nearly 60% of these devices have been used in transportation, while the rest support communication and farming. About 28% are used for communication and 12% for farming. As BDS gets more popular, it is expected to play an increasingly important role in global navigation and positioning services. 51．Which systems is BDS similar to after being acknowledged by ICAO? A．GPS, GLONASS, Galileo. B．GPS, Galileo, satellites. C．Galileos, mobile apps, maps. D．GLONASS, maps, navigation. 52．When did BDS-3 start offering improved global services? A．By 1994. B．By 2000. C．By 2012. D．By 2020. 53．What can we infer from the Paragraph 3? A．The apps are all supported by the BDS. B．The BDS devices went global in 2023. C．The global use of the BDS is increasing. D．Farming uses the BDS the most in China. 54．What is the expected value of China’s satellite navigation industry by 2025? A．500 billion yuan. B．10,000 billion yuan. C．60% of the 2022 value. D．Double the 2023 value. 55．Where is the text most probably from? A．A science textbook. B．A daily newspaper. C．An industry report. D．A farming magazine. 二、任务型阅读 A The world is full of amazing things. Let’s see China’s amazing technology! Nowadays, we are used to using our phone to get a map of our location. But how do our phones know where in the world we are and in which direction we are going? It is all thanks to the satellites in space that help our phones calculate (计算) our position. Depending on where you are around the world, your phone may be receiving data from different systems. That’s how the BeiDou Navigation Satellite System (BDS) works in China. The BDS nowadays is more advanced than the first version (版本) of the system, which was sent into space in 2000. The present version has better technology and more satellites. When the system is finished, there will be lots of BDS satellites. In the future, those satellites will allow us to discover the position of objects with millimetre accuracy (精确度). Even though more satellites are being added to the system, the BDS has already been put to use. More than 40,000 Chinese fishing boats are using the system now. These boats are easily to be searched at sea. They are able to communicate with people on land as well as give the exact locations of ships in trouble. The BDS is being used on land as well. Of course, it’s not hard to imagine how the system is helping the police do their job. So does farming. Farmers are able to put the data to good use when operating smart farming machines. For example, the BDS can be used to control driverless trucks as they turn up the fields. Farmers are also using drones (无人机). Although the BDS is a product of China, the developers are actively developing international cooperation. Developers predict that the system will be not only popular within China, but overseas as well. The BDS will undoubtedly (无疑) bring lots of advantages to China and the rest of the world. 1、2题完成句子；3~5题简略回答问题。 56．Thanks to the satellites in space that help our phones to know where we are and we are going. 57．Chinese fishing boats are using the system to on land. 58．When was the first version of the BDS sent into space? . 59．According to the passage, which groups of people are using the BDS to work? . 60．What do you think of the BDS? How do you feel after reading the article? . B 根据短文内容，回答问题。（每题答案不超过8个词） On November 14, 2023, the International Civil Aviation Organization (ICAO) (国际民用航空组织) officially recognized China’s Bei Dou Satellite Navigation (卫星导航) System (BDS) as the world level. This makes it one of four global (全球的) satellite navigation systems, along with the United States’ GPS, Russia’s GLONASS and the European Union’s Galileo. China started to develop the BDS in 1994. The system came into use in 2000. After 12 years of work, it began serving the Asia-Pacific region. In 2020, with the global use of BDS-3, China has improved the system to provide users with more correct positioning services, making it a valuable tool for more industries, including transportation, agriculture, and surveying. Now, with 59 satellites in its network, the BDS has served more than 1.5 billion users across the world. Most mobile apps providing maps, navigation and shopping services in China already support the BDS. China’s satellite navigation industry is growing fast. Its value reached more than 500 billion yuan in 2022. That number is expected to double by 2025. In the first half year of 2023, there were about 13.4 million new BDS devices (设备). Nearly 60% were used in transport systems. The rest were used in communication and agriculture. The former made up about 28% and the later 12%. As BDS gets more popular, it is expected to play an increasingly important role in global navigation and positioning services. 61．Which organization officially recognized China’s Bei Dou Satellite Navigation System as the world level? 62．When did BDS start to serve the Asia-Pacific region? 63．How many users has the BDS served across the world? 64．In the first half year of 2023, were most BDS services used in transport systems? 65．How do you like China’s Bei Dou Satellite Navigation (卫星导航) System (BDS)? 试卷第1页，共3页 试卷第1页，共3页 学科网（北京）股份有限公司 $$