Unit 8 People and Events- 单元同步练习-《英语 基础模块1》(高教版2023修订版）《上好课》（原卷版+解析版）

《英语 基础模块1》（高教版2023修订版） Unit 8 People and Events 单元同步练习 一、单词填空 1.Many great _____________(发明) have changed the way people live and work. 许多伟大的发明改变了人们的生活和工作方式。 2.Many vocational school students c__________(考虑) choosing a major related to their interests. 许多中职学生考虑选择与自己兴趣相关的专业。 3. I believe_________(相信) that vocational school students can achieve great success through hard work. 我相信中职学生可以通过努力获得巨大的成功。 4.We practice our oral English by __________(聊天) with classmates about our favorite jobs. 我们通过和同学聊自己喜欢的工作来练习英语口语。 5.We must ___________(完成)the vocational training tasks before the deadline. 我们必须在截止日期前完成职业培训的任务。 6.It is not easy to ___________(克服) difficulties, but we never give up. 克服困难并不容易，但我们永不放弃。 7.Our class will___________(设计) a poster to introduce the development of our city. 我们班将设计一张海报来介绍我们城市的发展。 8.We will have a party to celebrate our ____________(毕业) next month. 下个月我们会举办一场派对庆祝毕业。 9.The teacher made a busy __________(日程)for our vocational training. 老师为我们的职业培训制定了一份紧凑的日程表。 10.She is a ____________(杰出的)career woman who has achieved great success in her field. 她是一位杰出的职业女性，在自己的领域取得了巨大的成功。 二、单项选择 1. — _________________? I can’t prepare the PPT for the class presentation. — Of course. Let me help you choose the model first. A. What’s the matter B. Can you give me a hand C. Is there anything wrong D. Do you like PPT 2.— ________ do you like the new vocational training course? —I think it’s very practical and helpful for my future job.. A.What              B. How C.Which    D.Why 3. — ________ I finish the report this afternoon? — No, you ________. You can hand it in tomorrow morning. A. Must; needn’t B. Can; mustn’t C. May; can’t D. Need; mustn’t 4. It ________ be Lily at the door. She has gone to Shanghai for a competition. A. may B. must C. can’t D. needn’t 5.－Bell ________ the telephone in 1876. —What a great inventor he was! A．invents B．invented C．is inventing D．will invent 6.－We don’t ________ our students to be passive learners. We encourage them to think independently.. A．consider B．considered C．considering D．Consideration 7. Li Ming showed ________ great interest in computer programming when he was in Grade 10. A. a B.an C. the D. / 8.—May I take photos in the museum? —No, you ________. It’s against the rules. A. needn’t B. wouldn’t C. mustn’t D. couldn’t 9.— The telephone ________ by Alexander Graham Bell in 1876. —Yes, it changed the way people communicate greatly. A. invents B. invented C. was invented D. was discovered 10.－He succeeded ________ the first prize in the vocational skill competition last week. — Congratulations to her! A. win B. to win C. in winning D. won 11.The teacher’s words made us all ________ confident about the final exam. A. feel B. to feel C. feeling D. felt 12.－I want to be a fashion designer in the future. I want to design ________. A. anything beautiful B. beautiful anything C. something beautiful D. beautiful something 13.After his ________, he started his own business with his classmates. A. graduate B. graduating C. graduated D. graduation 14. He returned _________his hometown and worked as a teacher in a vocational school. A.of B.in C.out D. to 15.－Which of the following is right about Thomas Edison? Thomas Edison: He is an American inventor. He invented the practical incandescent light bulb in 1879. A. He is a British inventor. B. He invented the practical incandescent light bulb. C. He invented the telephone. D. He invented the light bulb in 1897. 3、 日常交际 Lily: What is your 1. ____________ invention? Tom: The e-book reader.. Lily: Why do you like it 2. ____________ than other inventions? Tom: I can carry thousands of books with it, such 3. ____________ classic novels and science books. Do you have a favorite invention too? Lily: Sure. The smart watch. Tom: 4._________do you like it so much? Lily: I can check the time, track my fitness wherever I go. Tom: That makes sense. I think it’s one of the most useful 5._________for daily life. 四、阅读理解 In recent years, a number of Chinese creations have been popular around the world. Among them, four creations are the most well-known. They are known as the “four new great inventions” of modern China. High-speed trains China created its first high-speed railway line in 2008. Since then, many visitors have travelled around China by high-speed trains. China is working on new high-speed trains that will have a top speed of 400 kilometers per hour. These high-speed trains will connect more than 80 percent of main cities across China. Shared bikes Shared bike services started in western countries. Unlike traditional bike-sharing methods, China’s shared bikes allow users to simply pick up or park on the street. People just need to scan a QR code on a shared bike with a smartphone app. After you finish riding, you can park it some place, lock it and pay for your ride. Mobile payment Mobile payment is turning China into a “cashless society”. For example, customers now pay for goods simply by Alipay or WeChat payment with their mobile phones. They can also use Alipay to buy things on international websites and apps. What’s more, in some countries around the world, they can also use Alipay or WeChat Pay. Online shopping China has the largest number of Internet users in the world. The largest online shopping website Alibaba has created an “online shopping festival” and celebrates on December 11th every year. People can buy plenty of things at good prices on that day. And online shopping also helps to provide jobs for many people. 1. What do we need if we want to buy things by Alipay? A. A mobile phone. B. A QR code. C. Cash. D. A shopping website. 2. Which is NOT true about China’s four new great creations? A. Many people can get jobs because of the online shopping. B. The shops in China don’t accept cash from the customers now. C. Lots of people choose to take the high-speed trains to have trips. D. We can park the shared bikes somewhere on the street after riding. 3. When you use a shared bike, you can do all of the following EXCEPT ________. A. choosing the bike on the street B.locking the bike C. paying for your ride on your phone D.repairing the bike 4.What’s the main purpose of this text? A.To explain the uses of shared bicycles. B.To show the development of Chinese technology. C.To share the history of high-speed railway in China. D.To compare with the four great inventions of ancient China. 5.Where is the text most probably from? A.A travel magazine. B.A storybook. C. A newspaper. D.A geography textbook. 【答案】 A B D B C 【解析】本文是一篇说明文。文章主要讲述了中国现代“新四大发明”(高铁、共享单车、移动支付和网购)的相关情况。 1.细节理解题。根据Mobile payment部分中“For example, customers now pay for goods simply by Alipay or WeChat payment with their mobile phones,(例如，消费者现在只需通过支付宝或微信手机支付商品。)”可知，如果我们想通过支付宝买东西，我们需要一部手机。故选A。 2.细节理解题。根据根据Mobile payment部分中 "Mobile payment is turning China into a"cashless society".For example,customers now pay for goods simply by Alipay or WeChat payment with their mobile phones.(移动支付正在把中国变成一个“无现金社会”。例如，消费者现在只需通过支付宝或微信手机支付商品。)”可知，移动支付正在使中国成为一个“无现金社会”，但这并不意味着中国现在所有的商店都不接受现金了，只是越来越多的人选择使用移动支付。B选项“The shops in China don't accept cash from the customers now.(现在中国的商店不接受顾客的现金。)”表述错误。故选B。 3.细节理解题。根据Shared bikes部分中 “People just need to scan a QR code on a shared bike with a smartphone app. After you finish riding, you can park it some place,lock it and pay for your ride.(人们只需要用智能手机应用扫描共享单车上的二维码。骑完车后，你就可以把车停在某个地方，锁好车，然后付车费。)”可知，使用共享单车时，我们可以在街上选择自行车，骑行结束后可以锁车，并在手机上支付骑行费用，但文中没有提到需要自己修理自行车。故选D。 4.推理判断题。根据第一段 "in recent years, a number of Chinese creations have been popular around the world. Among them, four creations are the most well-known, They are known as the 'four new great inventions of modern China. (近年来,中国创作在世界各地流行起来。其中，有四个作品最为人所熟知。它们被称为现代中国的“新四大发明”。)”以及下文对高铁、共享单车、移动支付和网购的介绍可知，本文主要介绍了中国现代的“新四大发明”，是为了展示中国科技的发展。故选B。 5. 推理判断题。根据文章内容可知，本文主要介绍了中国现代的“新四大发明”，即高铁、共享单车、移动支付和网购，这些都是中国科技发展的成果，因此这篇文章最有可能来自报纸。故选C。。 五、语法填空 Bi Sheng was born in the Song Dynasty. He lived in a small village     1     lies in Huang gang today. He     2     (invent) the printing the Northern Song Dynasty. He was the     3     (one) inventor of the printing in the world. It is about 40 years     4     (early) than the printing in Germany. The printing is also     5     (call) the movable type printing (活字印刷术) . But how did it work in the past? First of all, the clay (黏土) was made into movable types. Then words were engraved (雕刻)     6     (careful) onto the types. After that, the words were chosen and put in the right order in a box according to the text. Next, the workers brushed ink onto the movable types. Finally, the types could be used for printing. They could be used again and again for     7     (difference) books. The movable type printing plays     8     important role in Chinese culture. With the help of it, Chinese culture spread around the world more quickly. At the same time, the movable type printing was widely used in the world.     9     a result, more and more culture     10     (communicate) among countries took place. 原创精品资源学科网独家享有版权，侵权必究！学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $ 《英语 基础模块1》（高教版2023修订版） Unit 8 People and Events 单元同步练习 一、单词填空 1.Many great _____________(发明) have changed the way people live and work. 许多伟大的发明改变了人们的生活和工作方式。 【答案】inventions  2.Many vocational school students c__________(考虑) choosing a major related to their interests. 许多中职学生考虑选择与自己兴趣相关的专业。 【答案】consider 3. I believe_________(相信) that vocational school students can achieve great success through hard work. 我相信中职学生可以通过努力获得巨大的成功。 【答案】believe 4.We practice our oral English by __________(聊天) with classmates about our favorite jobs. 我们通过和同学聊自己喜欢的工作来练习英语口语。 【答案】 chatting 5.We must ___________(完成)the vocational training tasks before the deadline. 我们必须在截止日期前完成职业培训的任务。 【答案】complete 6.It is not easy to ___________(克服) difficulties, but we never give up. 克服困难并不容易，但我们永不放弃。 【答案】 overcome 7.Our class will___________(设计) a poster to introduce the development of our city. 我们班将设计一张海报来介绍我们城市的发展。 【答案】design 8.We will have a party to celebrate our ____________(毕业) next month. 下个月我们会举办一场派对庆祝毕业。 【答案】 graduation 9.The teacher made a busy __________(日程)for our vocational training. 老师为我们的职业培训制定了一份紧凑的日程表。 【答案】schedule  10.She is a ____________(杰出的)career woman who has achieved great success in her field. 她是一位杰出的职业女性，在自己的领域取得了巨大的成功。 【答案】brilliant 二、单项选择 1. — _________________? I can’t prepare the PPT for the class presentation. — Of course. Let me help you choose the model first. A. What’s the matter B. Can you give me a hand C. Is there anything wrong D. Do you like PPT 【答案】B 【解析】考查情景交际。句意：—你能帮我个忙吗？我不会为课堂展示准备 PPT。—当然可以。我先帮你选模板吧。A. 怎么了；B. 你能帮我个忙吗；C. 有什么问题吗；D. 你喜欢 PPT 吗。根据答语“Of course. Let me help you...”可知，问句是在求助，“Can you give me a hand”与题干中“Can you do me a favor” 为同义表达，均表示“求助”。故选 B。 2.— ________ do you like the new vocational training course? —I think it’s very practical and helpful for my future job.. A.What              B. How C.Which    D.Why 【答案】B 【解析】考查固定句型。句意：—你觉得新的职业培训课程怎么样？—我认为它非常实用，对我未来的工作很有帮助。“How do you like...?”与“What do you think of...?”为同义句型，均表示 “你认为…… 怎么样？”。故选 B。 3. — ________ I finish the report this afternoon? — No, you ________. You can hand it in tomorrow morning. A. Must; needn’t B. Can; mustn’t C. May; can’t D. Need; mustn’t 【答案】A 【解析】考查情态动词。句意：—我必须今天下午完成报告吗？—不，你不必。你可以明天早上交。must 表示“必须”，引导的一般疑问句，否定回答用“needn’t”（不必）；mustn’t 表示“禁止”，不符合语境。故选 A。 4. It ________ be Lily at the door. She has gone to Shanghai for a competition. A. may B. must C. can’t D. needn’t 【答案】C 【解析】考查情态动词表推测。句意：门口不可能是莉莉。她去上海参加比赛了。A. 可能（肯定推测，语气弱）；B. 一定（肯定推测，语气强）；C. 不可能（否定推测，语气肯定）；D. 不必。根据 “She has gone to Shanghai” 可知，此处为否定推测，用 can’t。故选 C。 5.－Bell ________ the telephone in 1876. —What a great inventor he was! A．invents B．invented C．is inventing D．will invent 【答案】B 【解析】考查一般过去时。句意：—贝尔在 1876 年发明了电话。—他真是个伟大的发明家！根据时间状语 “in 1876” 可知，动作发生在过去，谓语动词用一般过去时。故选 B。 6.－We don’t ________ our students to be passive learners. We encourage them to think independently.. A．consider B．considered C．considering D．Consideration 【答案】A 【解析】考查动词形式。句意：我们不把学生看作被动的学习者。我们鼓励他们独立思考。助动词 don’t 后接动词原形，consider为及物动词，符合“consider sb. to be...”（把某人看作……）的结构。故选 A。 7. Li Ming showed ________ great interest in computer programming when he was in Grade 10. A. a B.an C. the D. / 【答案】A 【解析】考查不定冠词。句意：李明在十年级时就对计算机编程表现出极大的兴趣。interest 表示 “具体的兴趣爱好”时为可数名词，great 以辅音音素开头，用不定冠词 a 修饰。故选 A。 8.—May I take photos in the museum? —No, you ________. It’s against the rules. A. needn’t B. wouldn’t C. mustn’t D. couldn’t 【答案】C 【解析】考查情态动词。句意：—我可以在博物馆里拍照吗？—不，你绝对不可以。这违反规定。may 引导的一般疑问句，否定回答用 mustn’t 表示“禁止”，符合博物馆禁止拍照的场景。故选 C。。 9.—The telephone ________ by Alexander Graham Bell in 1876. —Yes, it changed the way people communicate greatly. A. invents B. invented C. was invented D. was discovered 【答案】C 【解析】考查时态和语态。句意：—电话是由亚历山大・格雷厄姆・贝尔在 1876 年发明的。—是的，它极大地改变了人们的交流方式。telephone 与 invent 是被动关系，且时间状语 “in 1876” 表示过去，用一般过去时的被动语态 “was invented”。discover 表示 “发现（原本存在的事物）”，不符合语境。故选 C。 10.－He succeeded ________ the first prize in the vocational skill competition last week. — Congratulations to her! A. win B. to win C. in winning D. won 【答案】C 【解析】考查固定搭配。句意：—他上周在职业技能比赛中成功获得了一等奖。—恭喜她！succeed in doing sth. 为固定搭配，意为“成功做某事”，介词 in 后接动名词形式。故选 C。 11.The teacher’s words made us all ________ confident about the final exam. A. feel B. to feel C. feeling D. felt 【答案】A 【解析】考查使役动词的用法。句意：老师的话让我们都对期末考试充满信心。make 为使役动词，后接省略 to 的不定式作宾语补足语，即“make sb. do sth.”（使某人做某事）。故选 A。 12.－I want to be a fashion designer in the future. I want to design ________. A. anything beautiful B. beautiful anything C. something beautiful D. beautiful something 【答案】C 【解析】考查不定代词的用法。句意：—— 我将来想成为一名时装设计师。我想设计一些漂亮的东西。形容词修饰不定代词时，需后置，排除 B、D；something 用于肯定句，anything 用于否定句或疑问句，本句为肯定句，用 something。故选 C。 13.After his ________, he started his own business with his classmates. A. graduate B. graduating C. graduated D. graduation 【答案】D 【解析】考查名词用法。句意：毕业后，他和同学们一起创业了。after 为介词，后接名词作宾语。graduate 为动词，graduation 为名词，意为 “毕业”，符合语境。故选 D。 14. He returned _________his hometown and worked as a teacher in a vocational school. A.of B.in C.out D. to 【答案】D 【解析】考查介词搭配。句意：他回到家乡，在一所职业学校当老师。return to 为固定搭配，意为 “回到（某地）”。故选 D。 15.－Which of the following is right about Thomas Edison? Thomas Edison: He is an American inventor. He invented the practical incandescent light bulb in 1879. A. He is a British inventor. B. He invented the practical incandescent light bulb. C. He invented the telephone. D. He invented the light bulb in 1897. 【答案】B 【解析】考查细节理解。句意：—— 关于托马斯・爱迪生，下列哪项是正确的？根据题干中 “He invented the practical incandescent light bulb in 1879.” 可知，爱迪生发明了实用的白炽灯泡。A 项 “英国发明家” 错误，他是美国人；C 项 “发明电话” 错误，电话是贝尔发明的；D 项 “1897 年发明灯泡” 错误，时间是 1879 年。故选 B。 3、 日常交际 Lily: What is your 1. ____________ invention? Tom: The e-book reader.. Lily: Why do you like it 2. ____________ than other inventions? Tom: I can carry thousands of books with it, such 3. ____________ classic novels and science books. Do you have a favorite invention too? Lily: Sure. The smart watch. Tom: 4._________do you like it so much? Lily: I can check the time, track my fitness wherever I go. Tom: That makes sense. I think it’s one of the most useful 5._________for daily life. 【答案】1. favorite 2.most 3. as 4. Why 5. inventions 四、阅读理解 In recent years, a number of Chinese creations have been popular around the world. Among them, four creations are the most well-known. They are known as the “four new great inventions” of modern China. High-speed trains China created its first high-speed railway line in 2008. Since then, many visitors have travelled around China by high-speed trains. China is working on new high-speed trains that will have a top speed of 400 kilometers per hour. These high-speed trains will connect more than 80 percent of main cities across China. Shared bikes Shared bike services started in western countries. Unlike traditional bike-sharing methods, China’s shared bikes allow users to simply pick up or park on the street. People just need to scan a QR code on a shared bike with a smartphone app. After you finish riding, you can park it some place, lock it and pay for your ride. Mobile payment Mobile payment is turning China into a “cashless society”. For example, customers now pay for goods simply by Alipay or WeChat payment with their mobile phones. They can also use Alipay to buy things on international websites and apps. What’s more, in some countries around the world, they can also use Alipay or WeChat Pay. Online shopping China has the largest number of Internet users in the world. The largest online shopping website Alibaba has created an “online shopping festival” and celebrates on December 11th every year. People can buy plenty of things at good prices on that day. And online shopping also helps to provide jobs for many people. 1. What do we need if we want to buy things by Alipay? A. A mobile phone. B. A QR code. C. Cash. D. A shopping website. 2. Which is NOT true about China’s four new great creations? A. Many people can get jobs because of the online shopping. B. The shops in China don’t accept cash from the customers now. C. Lots of people choose to take the high-speed trains to have trips. D. We can park the shared bikes somewhere on the street after riding. 3. When you use a shared bike, you can do all of the following EXCEPT ________. A. choosing the bike on the street B.locking the bike C. paying for your ride on your phone D.repairing the bike 4.What’s the main purpose of this text? A.To explain the uses of shared bicycles. B.To show the development of Chinese technology. C.To share the history of high-speed railway in China. D.To compare with the four great inventions of ancient China. 5.Where is the text most probably from? A.A travel magazine. B.A storybook. C. A newspaper. D.A geography textbook. 【答案】 A B D B C 【解析】本文是一篇说明文。文章主要讲述了中国现代“新四大发明”(高铁、共享单车、移动支付和网购)的相关情况。 1.细节理解题。根据Mobile payment部分中“For example, customers now pay for goods simply by Alipay or WeChat payment with their mobile phones,(例如，消费者现在只需通过支付宝或微信手机支付商品。)”可知，如果我们想通过支付宝买东西，我们需要一部手机。故选A。 2.细节理解题。根据根据Mobile payment部分中 "Mobile payment is turning China into a"cashless society".For example,customers now pay for goods simply by Alipay or WeChat payment with their mobile phones.(移动支付正在把中国变成一个“无现金社会”。例如，消费者现在只需通过支付宝或微信手机支付商品。)”可知，移动支付正在使中国成为一个“无现金社会”，但这并不意味着中国现在所有的商店都不接受现金了，只是越来越多的人选择使用移动支付。B选项“The shops in China don't accept cash from the customers now.(现在中国的商店不接受顾客的现金。)”表述错误。故选B。 3.细节理解题。根据Shared bikes部分中 “People just need to scan a QR code on a shared bike with a smartphone app. After you finish riding, you can park it some place,lock it and pay for your ride.(人们只需要用智能手机应用扫描共享单车上的二维码。骑完车后，你就可以把车停在某个地方，锁好车，然后付车费。)”可知，使用共享单车时，我们可以在街上选择自行车，骑行结束后可以锁车，并在手机上支付骑行费用，但文中没有提到需要自己修理自行车。故选D。 4.推理判断题。根据第一段 "in recent years, a number of Chinese creations have been popular around the world. Among them, four creations are the most well-known, They are known as the 'four new great inventions of modern China. (近年来,中国创作在世界各地流行起来。其中，有四个作品最为人所熟知。它们被称为现代中国的“新四大发明”。)”以及下文对高铁、共享单车、移动支付和网购的介绍可知，本文主要介绍了中国现代的“新四大发明”，是为了展示中国科技的发展。故选B。 5. 推理判断题。根据文章内容可知，本文主要介绍了中国现代的“新四大发明”，即高铁、共享单车、移动支付和网购，这些都是中国科技发展的成果，因此这篇文章最有可能来自报纸。故选C。。 五、语法填空 Bi Sheng was born in the Song Dynasty. He lived in a small village     1     lies in Huang gang today. He     2     (invent) the printing the Northern Song Dynasty. He was the     3     (one) inventor of the printing in the world. It is about 40 years     4     (early) than the printing in Germany. The printing is also     5     (call) the movable type printing (活字印刷术) . But how did it work in the past? First of all, the clay (黏土) was made into movable types. Then words were engraved (雕刻)     6     (careful) onto the types. After that, the words were chosen and put in the right order in a box according to the text. Next, the workers brushed ink onto the movable types. Finally, the types could be used for printing. They could be used again and again for     7     (difference) books. The movable type printing plays     8     important role in Chinese culture. With the help of it, Chinese culture spread around the world more quickly. At the same time, the movable type printing was widely used in the world.     9     a result, more and more culture     10     (communicate) among countries took place. 【答案】 1.that/which 2.invented 3.first 4.earlier 5.called 6.carefully 7.different 8.an 9.As 10.communication 【导语】本文是一篇说明文。文章主要讲述了毕昇发明活字印刷术及其工作原理和意义。 1.考查定语从句。句意:他住在如今位于黄冈的一个小村庄里。分析句子结构可知，空处应是定语从句的关系词，先行词是a small village，指物且在从句中作主语，所以用关系代词which或that。 2.考查动词时态，句意:他在公元600年左右发明了印刷术。根据时间状语“around 600 AD”可知，此处描述的是过去发生的事情，应用invent的过去式invented作谓语。 3.考查序数词。句意:他是世界上第一个发明印刷术的人。根据定冠词“the”可知，此处表示排序，应用one的序数词形式first表达“第一”。故填first。 4.考查形容词比较级。句意:它比德国的印刷术早了大约40年。根据句中的"than”可知，此处应用early的比较级形式earlier，表示“更早的”。故填earlier. 5.考查被动语态。句意:这种印刷术也被叫做活字印刷术。分析句子结构可知，句子主语The printing和call之间是被动关系即“印刷术被叫做…”，应用被动语态，谓语表达为be done，空前已有be的三单形式is，所以此处用过去分词called。故填called。 6.考查副词。句意:然后把字小心地雕刻在活字上。分句结构可知，此处需用副词作状语，修饰动词engraved，所给词careful是形容词，其副词词形是carefully，意为“小心地”。故填carefully。 7.考查形容词。句意:它们可以被一次又一次地用于不同的书籍。根据名词“books”可知，此处应用所给名词difference的形容词词形different作定语，修饰名词books，意为“不同的”。故different。 8.考查冠词。句意:活字印刷术在中国文化中起着重要的作用。play an important role in.是固定短语，意为“在..中起重要作用”，important是以元音音素开头的单词，所以用不定冠词an。故填an。 9.考查固定短语。句意:结果，国家之间发生了越来越多的文化交流。asaresult是固定短语，意为“结果”，位于句首，首字母需大写。故填As。 10.考查名词。句意:结果，国家之间发生了越来越多的文化交流。根据空前的“more and more”和空后的“among countries”可知，此处应用所给动词communicate的名词词形communication作主语中心词，communication表示“交流;沟通”时为不可数名词。故填communication。 原创精品资源学科网独家享有版权，侵权必究！学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $