Unit 4 Inventions 单元话题（发明创造）阅读理解进阶练15篇-2025-2026学年八年级英语上册重难点讲练全攻略（沪教版2024）

2025-2026学年一线教师制作新教材英语同步精品系列资料，名师遴选！ 2025-2026学年一线教师制作新教材英语同步精品系列资料，名师遴选！ 学校:___________姓名：___________班级：___________考号：___________ Unit 4 Inventions 单元话题（发明创造）阅读理解进阶练15篇 说明：此专题分三个难度层次，基础入门训练<进阶拓展训练< 能力综合实践，老师根据学生实际情况进行针对性难度训练。 基础入门训练5篇 Solar (太阳能) Backpack Lights Up VillagesTwo engineers in Kenya invented a solar backpack. It uses sunlight to charge (充电) and can provide light for up to 12 hours. So far, 5,000 students in villages without electricity have received these backpacks. A teacher said, “Children can study in the dark with this light.” The project raised $1 million and planned to reach 20 countries by 2025. Tokyo’s New E-Waste Recycling AppA Tokyo company created a mobile app called “E-Cycle”. Users can exchange old electronics (电子设备), such as phones or computers, for coupons (优惠券). In six months, they collected 100 tons of e-waste, including 15,000 phones and 2,000 laptops. The CEO said, “We turn trash into useful materials.” Now, Seoul and Singapore are also using this method. ________A farm in California uses smart robots to grow vegetables. These robots have cameras to find pests and wild grass. The pesticide (杀虫剂) use drops by 70% and crop harvests rise a lot. The farm owner said, “They’re like 1,000 eco-friendly workers who never sleep.” Thirty farming companies have given money to this technology to fight food shortages. 1．In which SECTION of the newspaper can we read the news? A．EDUCATION. B．ENVIRONMENT. C．AMUSEMENT. D．CULTURE. 2．What is the main use of the solar backpack? A．To keep sunlight to make light. B．To give gifts to city students. C．To win a design competition. D．To build new schools in Kenya. 3．How does the “E-Cycle” app encourage recycling? A．By fixing up old phones. B．By offering coupons for old electronics. C．By using more workers to collect trash. D．By educating people about recycling. 4．What is the best heading for the third piece of news? A．California’s Food Shortage Dangers B．Cameras on Robots Help Environment C．Robot Farmers Help Grow Vegetables D．New Challenges in Farming 5．What does the above news focus on? A．Technology competitions in modern life. B．Green solutions for real problems. C．Government decisions on weather changes. D．Development plans for a better life. 【答案】1．B 2．A 3．B 4．C 5．B 【导语】本文主要介绍的是太阳能背包、电子垃圾应用程序和智能机器人。 1．推理判断题。通读全文可知，文章内容都与环保、资源回收、节能等“环境”话题相关，故选B。 2．细节理解题。根据“It uses sunlight to charge (充电) and can provide light for up to 12 hours.”可知，这个背包的主要用途是利用阳光进行充电，以提供照明，故选A。 3．细节理解题。根据“Users can exchange old electronics (电子设备), such as phones or computers, for coupons (优惠券).”可知，该应用通过用旧电子产品兑换优惠券来鼓励回收，故选B。 4．最佳标题题。根据“A farm in California uses smart robots to grow vegetables. These robots have cameras to find pests and wild grass. The pesticide (杀虫剂) use drops by 70% and crop harvests rise a lot.”可知，第三则新闻重点介绍在加州的农场使用机器人种植蔬菜，减少杀虫剂用量并提高产量，因此最佳标题是C项。故选C。 5．主旨大意题。通读全文可知，三则新闻都关注环保和可持续发展，即用绿色技术解决实际问题，故选B。 Used first as a grooming tool, the comb (梳子) has many forms for all types of hair. The type of comb you need will be different depending on your hair, as well as the purpose of the comb. Combing different hair requires a different comb. The earliest use of the comb appeared about 5,000 years ago. In fact, many different kinds of combs came out in history. The ancient Egyptians could make combs. In ancient China, people used combs to show their social status (地位). Over time, combs have become more efficient tools for hair care at present. Today, there are different combs for people to choose from and use. Combs serve different functions for different hair types and styles. People use combs to deal with disordered (凌乱的) or wet hair. Another common use for the comb is to secure hair in one position. During the 1900s, combs were the best choice for keeping hair beautiful. In the earliest time, people made combs from bones of animals. But later, people began to make combs from wood or plastic. Now most people use these two kinds of combs because they are cheap. And high-end combs are made of expensive steel or gold. At present, combs have different shapes and types in different colours. People can choose their favourite combs as they like. But when using combs, we should know we’d better not use others’ combs. And we should wash or brush our combs with clean water as often as possible to keep them clean. 1．What does the type of comb you need depend on? A．Different hair and materials of the comb. B．Different prices and the purpose of the comb. C．Different hair and the purpose of the comb. D．Different prices and materials of the comb. 2．What do people use combs to do at present? A．To follow the fashion. B．To give care to hair. C．To show social status. D．To find the history. 3．What is the meaning of the underlined word “secure” in the passage? A．Keep. B．Appear. C．Cover. D．Fill. 4．Why do most people use combs made of wood or plastic? A．Because they are soft. B．Because they are short. C．Because they are light. D．Because they are cheap. 5．Which can be the best title for the passage? A．The future of the comb B．The usage of the comb C．The development of the comb D．How to choose a comb 【答案】1．C 2．B 3．A 4．D 5．C 【导语】本文是一篇说明文，主要介绍了梳子的历史、功能、材质及使用注意事项。 1．细节理解题。根据文章第1段“The type of comb you need will be different depending on your hair, as well as the purpose of the comb.”可知，你需要的梳子类型会根据你的头发以及梳子的用途而有所不同。故选C。 2．细节理解题。根据文章第2段“Over time, combs have become more efficient tools for hair care at present.”可知，现在人们用梳子护理头发。故选B。 3．词句猜测题。根据文章第3段“Another common use for the comb is to secure hair in one position.”可知，梳子的另一个常见用途是将头发固定在某个位置。结合上下文，“secure”在此处意为“固定”，与“Keep”同义。故选A。 4．细节理解题。根据文章第4段“But later, people began to make combs from wood or plastic. Now most people use these two kinds of combs because they are cheap.”可知，现在大多数人使用木头或塑料做的梳子，是因为它们便宜。故选D。 5．最佳标题题。全文围绕梳子的历史演变、功能变化、材质发展展开，因此最佳标题应概括梳子的发展历程。故选C。 Madison Checketts, a teenager, has loved the beach since she was a child. But each time on her family vacations, she could easily notice plastic (塑料的) bottles lying on the sand. After learning more about plastic pollution and methods to reduce it, she created an edible (可食用的) water bottle called Eco-Hero. She started working on the project in October, 2021. In her early project, when Checketts asked herself what she could do to make the world a better place, she thought about reducing plastic pollution. Single-use plastic products like water bottles are used and thrown away. After that, plastic water bottles often end up in the sea. Plastic pollution is a main ________ to the sea and wildlife in it. After being selected (挑选) as one of the students from her school to compete in the school district’s science fair, she won first place at a state science fair before advancing to a national competition. An Eco-Hero holds about three-quarters of a cup of water and costs about $1.2 to make. Basically, people make a hole at the top of the gelatinous membrane (胶质 膜 ) and drink the water. “It took many tries to get the membrane strong enough so it would not pop in my hands,”Checketts says. In her free time, Checketts likes to play soccer, draw and spend time with family and friends. When she grows up, she wants to find a way to combine her hobbies and studies, and either be an engineer, a designer or a soccer player. As Checketts thinks about the future of the Eco-Hero, she says she wants to run more tests to make the bottle stronger and bigger. She hopes the Eco-Hero encourages people to think and understand that everyone can make the world a better place. 1．What is the Eco-Hero? A．The name of a kind of plastic. B．The name of plastic pollution. C．The name of a new kind of water bottle. D．The name of a beach. 2．Which word can be filled in the blank of the second paragraph? A．example B．secret C．food D．danger 3．What do we know from the underlined part? A．We should be strong to hold the bottle. B．Making this kind of bottle isn’t easy. C．Checketts is trying out another bottle. D．We can drink more water in this bottle. 4．How will this kind of bottle be in the future? A．Stronger and bigger. B．Thicker and larger. C．Stronger and thicker. D．Bigger and cheaper. 5．What does the fourth paragraph mainly tell us? A．Checketts’ school and family. B．Checketts’ study and hobbies. C．Checketts’ hobbies and dreams. D．Checketts’ friends and teachers. 【答案】1．C 2．D 3．B 4．A 5．C 【导语】本文主要介绍了Madison Checketts为了减少塑料垃圾而发明的可食用水瓶的故事。 1．细节理解题。根据“she created an edible (可食用的) water bottle called Eco-Hero.”可知，Eco-Hero是一种新型水瓶的名字。故选C。 2．推理判断题。根据“Plastic pollution is a main... to the sea and wildlife in it.”并结合实际可知，塑料污染是对海洋和野生动物的主要威胁。故选D。 3．推理判断题。根据“It took many tries to get the membrane strong enough so it would not pop in my hands,”可知，Checketts试了很多次才让薄膜足够结实，这样它就不会在手里爆开，由此推测，制作这种瓶子并不容易。故选B。 4．细节理解题。根据“As Checketts thinks about the future of the Eco-Hero, she says she wants to run more tests to make the bottle stronger and bigger.”可知，这种瓶子将来会更强、更大。故选A。 5．主旨大意题。根据第四段内容可知，本段主要介绍了Checketts的爱好和梦想。故选C。 Benjamin Franklin came into the world on January 17, 1706. The family was a big one with several children. Ben went to school when he was 8. Although he did well in his study, there was not enough money for his education. So he left school after two years. But he never stopped learning. In 1742, he invented the famous Franklin stove. Before Ben invented the Franklin stove, people heated their homes with fire in the traditional fireplace (壁炉). Using such kind of fireplace was not good because most of the heat went into the chimney (烟囱). And it was also dangerous because the fire in the fireplace could set the house on fire. Ben came up with the idea of using the baffle (折流板) system to make the heat travel throughout the stove. The Franklin stove used less wood and was safer to heat the room. What’s more, Ben was interested in electricity. After many years of hard work, he finally had a plan to prove (证明) that lightning was electricity and he was successful at last in the kite experiment. Although he had many inventions in life, he never kept them to himself. He wanted to share them with people all over the world. 1．What can we know from the first paragraph? A．Ben went to school in 1716. B．Ben was born in a poor family. C．Ben was the only child of the family. D．Ben was not interested in inventing. 2．How did the invention of the Franklin stove help us? A．It helped us buy more warm houses. B．It helped us read more books. C．It helped us save wood and keep safer. D．It helped us save some time to heat. 3．What does the third paragraph tell us? A．Ben and his stove. B．Ben and his family. C．Ben’s hard life. D．Ben and electricity. 4．Which of the following is TRUE according to the passage? A．Ben kept his inventions to himself. B．Ben went to school for only a year. C．Ben did badly in his study. D．Ben did the kite experiment. 5．Why did the writer write the passage? A．To encourage us to write. B．To tell us to learn more at school. C．To tell us a famous inventor. D．To encourage us to invent something. 【答案】1．B 2．C 3．D 4．D 5．C 【导语】本文是一篇记叙文。文章讲述了著名发明家本杰明·富兰克林的生平经历、重要发明及其分享发明的理念，展现了他在科学和发明领域的成就与精神。 1．细节理解题。根据第一段“there was not enough money for his education”可知，家里没有足够的钱供他上学，说明他家境贫困。故选B。 2．细节理解题。根据第二段“The Franklin stove used less wood and was safer to heat the room.”可知，富兰克林炉用更少的木材，且取暖更安全。故选C。 3．主旨大意题。根据第三段“What’s more, Ben was interested in electricity.”可知，富兰克林对电感兴趣，随后描述他通过风筝实验证明闪电是电的过程；因此，本段讲述了富兰克林与电的相关事情。故选D。 4．推理判断题。根据第三段“he finally had a plan to prove that lightning was electricity and he was successful at last in the kite experiment”可知，他终于想出了一个方案来证明闪电就是电。最终，他在风筝实验中取得了成功；据此可以推断，富兰克林做了风筝实验。故选D。 5．主旨大意题。综合全文可知，本文通篇围绕本杰明・富兰克林的生平、发明展开，核心是“介绍这位著名的发明家”。故选C。 Summer is coming quickly. It’s the time of the year in which people like to change their clothes for the new season. But how about adding something high-tech (高科技的) to the summer look? Let’s check out some of the ways in which technology (技术) is changing the clothes people wear. A Chinese research team has developed 3D printing techniques that can create clothes with the ability to change temperatures. The technology they used is those materials that change with the environment. The team placed an object in the clothing that could be transformed (转换). It also absorbs (吸收) or gives off heat depending on the wearer’s body temperature. Zhang Yongyi, a Chinese Academy of Sciences researcher, said it was the first time such clothing had been made using a controllable 3D printing method. Scientists in South Korea have developed a kind of wearable clothes that create electricity (电) as wearers keep moving. Of course, it doesn’t take much time or effort for people. Wearers only need to move naturally to power small electronic objects. The inside of the clothes produces energy, which is then stored. Although the clothes have an electronic object built in, they feel completely normal. Kim Sang-Woo, a professor at the Sungkyunkwan University, is proud of his team’s development, saying, “It feels like a normal jacket.” In another amazing study, clothes could serve as devices (设备) themselves. A team of engineering students from the University of Washington, the US, have led these efforts by putting a special thing into cotton T-shirts. The clothing can then send the message that can be received by cellphones. 1．What is the main idea of the text? A．Advice on choosing clothes. B．High-tech changes in clothing. C．The history of 3D printing. D．Famous scientists in technology. 2．What can the Chinese 3D-printed clothes do? A．Change colors. B．Send messages. C．Store energy. D．Control temperature. 3．Why are the South Korean clothes special? A．They make power. B．They feel heavy. C．They use cotton. D．They change shape. 4．What is the structure(结构) of the passage? (P-Paragraph) A． B． C． D． 5．In which section of a magazine (杂志) can you read the text? A．Health and sport. B．History and culture. C．Science and technology. D．Life and environment. 【答案】1．B 2．D 3．A 4．A 5．C 【导语】本文是一篇说明文。主要介绍了科技在服装领域带来的诸多变化，包括中国的3D打印控温服装、韩国的可发电服装以及美国将服装作为设备的研究等内容。 1．主旨大意题。根据“Let's check out some of the ways in which technology (技术) is changing the clothes people wear.”可知，本文主要讲了科技在服装方面的改变。故选B。 2．细节理解题。根据“A Chinese research team has developed 3D printing techniques that can create clothes with the ability to change temperatures.”可知，中国的3D打印服装可以控制温度。故选D。 3．细节理解题。根据“Scientists in South Korea have developed a kind of wearable clothes that create electricity (电) as wearers keep moving.”可知，韩国的衣服特别之处在于它们能发电。故选A。 4．篇章结构题。文章第一段总述科技改变服装，第二、三、四段分别介绍不同国家在服装科技方面的研究，是总分结构。故选A。 5．推理判断题。文章主要讲服装方面的科技，所以可能在杂志的科技板块读到。故选C。 进阶拓展训练5篇 Engineers from MIT and China are working on a project to turn seawater into drinking water. They are using a special device (装置) inspired by the ocean and powered by the sun. The team of scientists wrote about a new invention in a scientific journal called Joule. They are developing a system that uses sunlight to clean seawater and make it safe to drink. The device’s special design makes the water move in swirling patterns (呈漩涡状), like how it moves in the ocean. The sunlight heats up the water and makes it evaporate (蒸发), leaving the salt behind. The vapor (蒸汽) then turns back into water and becomes safe to drink. The salt is constantly washed away so it doesn’t cause any problems. The engineers project (预计) that when they make this system the size of a small suitcase, it can produce about 4 to 6 liters of drinking water per hour. It will work for many years before needing repairs or new parts. With its size and effectiveness (效率), this system could provide drinking water that is cheaper than tap water. Zhang Lenan, a research scientist at MIT’s Device Research Laboratory, says, “We are really excited because, for the first time ever, we have a chance to make water using only sunlight, and it could be cheaper than regular tap water.” 1．The special device can turn seawater into drinking water by ________. A．other devices B．the seawater itself C．the wind D．the solar energy 2．What’s the meaning of the underlined word “inspired” in Paragraph 1? A．制造 B．淹没 C．赋予灵感 D．受驱使 3．What does the third paragraph mainly tell us? A．The salt can’t cause any problems. B．It is easy to change seawater into fresh water. C．How the device changes seawater into drinking water. D．The device can change seawater into drinking water without the sun. 4．What’s the purpose of the fourth paragraph? A．To tell us the device plays a very important role. B．To tell us the device can help people produce tap water. C．To tell us the device is the size of a small suitcase. D．To tell us the device will be practical and long-lasting. 5．What does Zhang Lenan think about making water using only sunlight? A．It will have a bright future. B．It will be as cheap as regular tap water. C．It will make people no longer short of water. D．It will make the sea have less water in the future. 【答案】1．D 2．C 3．C 4．D 5．A 【导语】本文主要介绍了来自麻省理工学院和中国的工程师们正在开展一个将海水转化为饮用水的项目。 1．细节理解题。根据“They are using a special device inspired by the ocean and powered by the sun.”以及“The sunlight heats up the water and makes it evaporate, leaving the salt behind.”可知，这个特殊装置是利用太阳能将海水转化为饮用水的。故选D。 2．词句猜测题。根据“They are using a special device inspired by the ocean...”可知，装置是受海洋的启发而设计的，“inspired”在这里意思是“赋予灵感”。故选C。 3．主旨大意题。第三段主要描述了装置如何运作将海水转化为饮用水，包括水呈漩涡状流动、阳光加热蒸发、盐分留下、蒸汽凝结成水等过程。故选C。 4．推理判断题。第四段提到该系统能每小时产出一定量的饮用水，能使用很多年，且成本可能低于自来水，这些都是在说明这个装置实用且耐用。故选D。 5．观点态度题。根据文中张乐南所说“‘We are really excited because, for the first time ever, we have a chance to make water using only sunlight, and it could be cheaper than regular tap water.’”可知，他认为仅用阳光制水是有机会实现且成本更低的，也就是认为这种方式有光明的前景。故选A。 Alice Lewis is from America. She is a creative (有创造力的) girl. She likes to invent—to think of new ideas for things that no one has made before, and then make them. One day, Alice’s mother showed her an article which explained how difficult it was to get sick people through the countryside to the hospital in Africa. Alice wanted to help. Alice knew that in North America, before there were cars, horses pulled heavy things on a travois (旧式雪橇) which was made of wood. Alice thought people in Africa could do the same thing. She added wheels to the travois for the African people. To make her travois light to pull, she used bamboo, a plant that grows in Africa, instead of wood. You need to wear a belt (皮带) to pull Alice’s travois. That means you can free your hands to carry or hold other things. Alice thought her travois was perfect for carrying food home from the market, as well as taking people to the hospital. After it was finished, she wrote instructions (说明书) for building one. So people in Africa could make it by themselves. Alice doesn’t know if she wants to be an inventor when she grows up, because she also loves music and writing. But she thinks it’s important for children to learn about inventing at school. 1．What’s Alice’s travois made of? A．Bamboo. B．Wood. C．Iron. D．Glass. 2．The underlined word “light” in the passage means “______” in Chinese. A．明亮的 B．轻便的 C．美观的 D．舒适的 3．What did Alice do after she finished her travois? A．She tried to learn to use it. B．She showed it to her mother. C．She drew a picture of it. D．She wrote the way to make it. 4．Which is the right order of the following sentences according to the passage? ①Alice thought her travois was perfect to take people to hospital in Africa. ②Alice is not sure if she will be an inventor when she grows up. ③Alice wanted to help the people in Africa. ④Alice added wheels to the travois for the African people. A．①②③④ B．④③②① C．③②①④ D．③④①② 5．What is the best title for the passage? A．Helping Others B．A Gift C．A Creative Girl D．A New Invention 【答案】1．A 2．B 3．D 4．D 5．C 【导语】本文介绍了热爱发明的美国女孩Alice Lewis，并讲述了她为非洲人发明新型雪橇来帮助他们运输病人去医院的故事。 1．细节理解题。根据“she used bamboo, a plant that grows in Africa, instead of wood.”可知，爱丽丝是用竹子做的雪橇。故选A。 2．词句猜测题。根据“she used bamboo, a plant that grows in Africa, instead of wood.”以及常识可知，用竹子做雪橇是为了让雪橇拉起来更轻便，“light”表示“轻便的”。故选B。 3．细节理解题。根据“After it was finished, she wrote instructions (说明书) for building one.”可知，爱丽丝做好雪橇后写了一张说明书，告诉人们制作的方法。故选D。 4．细节理解题。根据文中顺序为“Alice wanted to help.”，“She added wheels to the travois for the African people.”，“Alice thought her travois was perfect for carrying food home from the market, as well as taking people to the hospital.”和“Alice doesn’t know if she wants to be an inventor when she grows up”分别对应③④①②。故选D。 5．最佳标题题。本文主要讲述女孩Alice热爱发明，改进旧式雪橇为人们带来方便的故事。结合文章开头“She is a creative girl”可知，C项作为文章标题最合适。故选C。 Imagine the situation. You are driving alone in a desert or on a mountain. You have no idea where you are. You passed the last house two hours ago. Then your car breaks down. It is night and it is cold. You have no mobile phone. What do you do? Well, next time take a GPS with you. This invention may be able to help you. It is a device (设备) which uses satellites to find the user’s position. A GPS cannot start your car, but at least you will know where you are. GPS, which means Global Positioning System, is a small radio receiver. It looks like a mobile phone. You can hold it in your hand, or put it in your pocket. It is sometimes put into a watch or a telephone. We also find GPS devices in cars, planes, or boats. Some of these devices have electronic maps, so you know where you are. For example, in a city they can tell you the name of the street. There are three parts to the Global Positioning System. The first part is the receiver. You can hold it in your hand, or have it fixed into your car, plane, etc. The second part is a group of satellites orbiting the earth. The receiver contacts at least four of the satellites and calculates (计算) its position. The third part of the system is a network of ground stations. They are all over the world. They control the satellites and make sure they are working well. Some people think that in the future the GPS will be as common as the mobile. They are becoming cheaper and more and more accurate (精确的). There are also new uses for the GPS. Perhaps they will become like watches. Everyone will have one and you will never be lost again. 1．What will you do if you are driving alone in a desert or on a mountain? A．Ask the policemen for help. B．Ask your parents for help. C．Ask your geography teacher for help. D．Take a GPS with you. 2．What does GPS look like? A．A small box. B．A small present. C．A mobile phone. D．A small plane. 3．What does the underlined word “position” in paragraph 1 mean in English? A．machine B．system C．decision D．place 4．How many parts are there in the Global Positioning System? A．Two. B．Three. C．Four. D．Five. 5．What’s the best title for the passage? A．Do you know satellites? B．Do you know how to get out of the desert? C．Do you know GPS? D．Do you know your position? 【答案】1．D 2．C 3．D 4．B 5．C 【导语】本文主要介绍了全球定位系统（GPS）的功能、组成部分、现状以及未来发展趋势。 1．细节理解题。根据第一段“Well, next time take a GPS with you. This invention may be able to help you.”可知，带上全球定位系统，这个发明可能帮上忙。故选D。 2．细节理解题。根据第二段“It looks like a mobile phone.”可知，全球定位系统看起来像一台手机。故选C。 3．词义猜测题。根据第一段“A GPS cannot start your car, but at least you will know where you are.”可知，全球定位系统能让人知道自己在哪里，所以划线词“position”的意思是“位置”。故选D。 4．细节理解题。根据第三段“There are three parts to the Global Positioning System.”可知，全球定位系统由三个部分组成。故选B。 5．最佳标题题。根据第二段“GPS, which means Global Positioning System, is a small radio receiver.”及全文内容可知，本文主要介绍了全球定位系统（GPS）的功能、组成部分、现状以及未来发展趋势。所以“你知道全球定位系统吗？”最适合作为标题。故选C。 When you are outside on a cold winter day, there is nothing more comfortable than having a nice hot meal. But what can you do if you can’t get a hot meal? Don’t worry. A kind of microwave bag can help you. The bag comes from a company called Willtex in Japan. The name of the bag is Willcook. The microwave bag is made up of a bag and a battery (电池). The bag looks like a common computer bag. It is only 160g. And the battery is 120g. If you put food into it, the food can get to 80℃ in just 5 minutes. To use the bag, you need to download a smartphone app (智能手机应用程序) called Hotopia. You can set the temperature between 40℃ and 250℃ with the smartphone app. The battery can help the bag work for about 8 hours. To make the food hot, you need to follow the following steps: First, you need to put the food into the bag. Next, close the bag. Then, make the bag work for about 5 minutes. Finally, open the bag and you can enjoy the hot food. The bag can also keep the temperature of the food in it. So you can keep drinks cool in it in hot days. Would you like to have this kind of bag? 1．What can we know from the first paragraph? A．The name of the bag. B．The use of the bag. C．The shape of the bag. D．The color of the bag. 2．How much does the microwave bag weigh (重) in total? A．40g. B．120g. C．160g. D．280g. 3．Which of the following is TRUE? A．The food in the bag can be very hot. B．The bag can make the food more delicious. C．Hotopia is the name of the battery. D．The bag can only be used for 4 hours. 4．What can we infer from (推断) the passage? A．We can only use the bag in hot days. B．It’s not difficult to use the microwave bag. C．The bag can only work for about 5 minutes. D．The bag can keep the food hot for 5 minutes. 5．Where can we find the passage? A．In a guidebook. B．In a newspaper. C．In a diary. D．In a storybook. 【答案】1．B 2．D 3．A 4．B 5．B 【导语】本文主要介绍了一种微波加热包的功能、使用方法和优势。 1．细节理解题。根据“But what can you do if you can’t get a hot meal? Don’t worry. A kind of microwave bag can help you.”可知，无法获取热餐时，微波加热包能提供帮助，所以从第一段中我们可以知道其用途。故选B。 2．细节理解题。根据“It is only 160g. And the battery is 120g.”可知，它一共重280g。故选D。 3．细节理解题。根据“You can set the temperature between 40℃ and 250℃ with the smartphone app.”可知，温度可设高达250℃，食物能非常热。故选A。 4．推理判断题。根据第四段内容可知，微波加热包的使用步骤是：放入食物→关闭→加热5分钟→享用，由此推断，操作并不难。故选B。 5．推理判断题。根据文章内容可知，本文介绍了一款由日本Willtex公司研发的微波加热包，这属于科普或生活类资讯，所以本文最可能出现在报纸上。故选B。 Plants can not move like animals, but they communicate and respond to the environment through their own movement—a type of “plant body language.” Scientists have been amazed by these movements and created inventions based on them. Everyone knows sunflowers turn to face the sun as it moves across the sky. This gave engineers the idea to create SmartFlower solar panels. They are in the shape of flowers, and each “petal” (花瓣) is a solar panel. SmartFlower follows the sun all day, which helps produce 40% more energy than normal solar panels. After dark or when there’s bad weather like heavy rain, the “petals” will close up. Some plants, such as ivy (常春藤), can climb walls using sticky pads. The pads help ivy stick to wood, stone, and other surfaces. After studying this plant, scientists created soft climbing robots. Though small, these robots are strong enough to move on different surfaces and turn corners. This allows them to work in hard-to-reach places. Another amazing plant is the exploding cucumber (喷瓜). It has a cool trick. When touched, it shoots seeds up to 6 meters away! Learning from this plant’s “body language”, medical researchers have developed a new way to send medicine to where it’s needed in the body, just as the plants shoot seeds to the right places. Plants may seem quiet and still, but their special movements have inspired real-world inventions. Next time you see a plant, watch its “body language” carefully; you might catch the next scientific breakthrough! 1．Which picture best describes the invention in paragraph 2? A． B． C． D． 2．Where is the climbing robot designed to operate? A．Deep under water. B．Wide farm fields. C．Narrow water pipes. D．Open playgrounds. 3．What is special about the exploding cucumber? A．It can play tricks on others. B．It can send out the seeds far. C．It helps people make medicine. D．It can grow up to 6 meters tall. 4．What does the underlined word “breakthrough” probably mean in Paragraph 5? A．An important discovery. B．A sudden fast movement. C．A tool for studying plants. D．A better way to grow plants. 5．Which would be the best title for the passage? A．Nature’s Behavior B．Plants Have Gone Wild C．Nature’s Language D．Plants Drive Creations 【答案】1．D 2．C 3．B 4．A 5．D 【导语】本文是一篇说明文，介绍了植物的“肢体语言”启发科学家创造出太阳能板、攀爬机器人、药物输送新方法等发明。 1．细节理解题。根据“They are in the shape of flowers, and each ‘petal’ (花瓣) is a solar panel. SmartFlower follows the sun all day... After dark or when there’s bad weather like heavy rain, the “petals” will close up”可知，SmartFlower太阳能板是花朵形状，花瓣为太阳能板且能追踪太阳，天黑后或者遇到大雨等恶劣天气时，“花瓣”会合拢。选项D对应的是晚上合拢时的状态。故选D。 2．细节理解题。根据“This allows them to work in hard-to-reach places.”可知，攀爬机器人能在难以到达的地方工作，狭窄的水管属于此类地方。故选C。 3．细节理解题。根据“When touched, it shoots seeds up to 6 meters away!”可知，喷瓜的特别之处是能将种子喷射到很远的地方。故选B。 4．词句猜测题。根据“Plants may seem quiet and still, but their special movements have inspired real-world inventions.”可知，植物的特殊运动启发了发明，此处指观察植物“肢体语言”可能会有下一个科学上的重要发现，“breakthrough”意为“重要发现”。故选A。 5．最佳标题题。根据“Plants may seem quiet and still, but their special movements have inspired real-world inventions.”可知，文章主要讲述植物的特殊运动启发了现实世界中的发明创造。故选D。 能力综合实践5篇 In these years, electric (电动的) cars are popular in our daily life. But do you know the electric plane? The company Eviation made the world’s first fully electric plane. The plane is called Alice. In September 2022, it made its first flight (飞行) in Washington, the US and flew in the sky for about eight minutes. The plane can carry nine passenger (乘客) and two pilots at the same time. Also it is very quiet and makes almost no waste gases (废气). There are 21,500 small batteries (电池) on the plane. They weigh 4.000 kg, half of the plane’s weight. Together, they make the plane able to fly for one to two hours. Because it is fully electric, it is cheap to fly the plane. But it is very expensive to make the plane. So nobody knows if electric planes will be a common way to travel around in the future. 1．How long did the plane Alice fly for the first time? A．About eight minutes. B．About sixteen minutes. C．About one hour. D．About two hours. 2．Which of the following is TRUE about the plane Alice? A．It makes a lot of noise. B．It makes a lot of waste gases. C．It can fly more than two hours. D．It can carry eleven people at a time. 3．The underlined word “They” refers to “________”. A．the planes B．the batteries C．the passengers D．the waste gases 4．What can we learn from the last paragraph? A．The plane is very popular in the US. B．The plane will be popular in the future. C．People think it is cheap to make the plane. D．People are not sure about the plane’s future. 5．The passage is mainly about ________. A．a popular car B．a famous company C．a fully electric plane D．a common way to travel 【答案】1．A 2．D 3．B 4．D 5．C 【导语】本文是一篇说明文。文章主要介绍了世界上第一架全电动飞机的情况。 1．细节理解题。根据第一段“In September 2022, it made its first flight in Washington, the US and flew in the sky for about eight minutes.”可知，爱丽丝飞机第一次飞行了8分钟。故选A。 2．细节理解题。根据第二段“The plane can carry nine passenger and two pilots at the same time.”可知，这架飞机可以同时搭载9名乘客和2名飞行员，一次可载11人。故选D。 3．词义猜测题。根据第二段“There are 21,500 small batteries on the plane. They weigh 4.000 kg, half of the plane’s weight.”可知，飞机上有21500块小电池，它们重4000千克；据此可知，划线单词“They”指代上文中的“batteries”。故选B。 4．推理判断题。根据最后一段“Because it is fully electric, it is cheap to fly the plane. But it is very expensive to make the plane. So nobody knows if electric planes will be a common way to travel around in the future.”可知，飞机是全电动的，所以驾驶飞机很便宜；但制造这架飞机非常昂贵，因此没人知道电动飞机是否会成为未来出行的普遍方式；据此可以推断，人们对电动飞机的未来感到不确定。故选D。 5．主旨大意题。根据第一段“In these years, electric cars are popular in our daily life. But do you know the electric plane?”及通读全文可知，本文主要介绍了世界上第一架全电动飞机的情况。故选C。 Using two fans he found at a market, a 15-year-old boy in Gaza has made electricity (电) to light up his family’s tent. He and his family began to live in the tent after the attack (袭击) of Israel. His neighbors in the tent camp called him “Gaza’s Newton” because of his talent. “Newton was sitting under an apple tree when an apple fell on his head. And we here are living in darkness, so I thought of creating light, and did so.” the boy said. Since the boy’s family lived a hard life, they connected (连接) their tent to the side of a house so that the boy could climb onto the roof and set up his two fans to charge batteries (电池). Then, the boy connected the fans to wires (电线) running down through the house and used switches (开关), lightbulbs and a thin piece of wood in the tent to make lighting for his family. It took the boy a while to succeed finally after his first two tries failed. The boy was still very happy that he was able to make this because he can not only help his family but others like them. What’s more, he was also very glad that people in this camp call him ‘Gaza’s Newton’, because he hoped to become a scientist like Newton and invent something that will be good for people of the whole world. 1．When did the boy start living in the tent? A．When he was 15 years old. B．After he found two fans. C．When he made light for his family. D．After his country was attacked. 2．Why did the neighbors call him “Gaza’s Newton”? A．For his talent of making two fans. B．For his talent of making light. C．For his talent of making tents. D．For his talent of helping his country. 3．How did the boy charge batteries? A． B． C． D． 4．Why did the boy hope to be a scientist? A．Because his family could help him a lot. B．Because he wanted to be called “Gaza’s Newton”. C．Because he lived a happy life and had much time. D．Because he hoped to help the people around the world. 5．What can we infer from the passage? A．The boy is creative and caring. B．The poor family was rich before the war. C．The boy’s neighbors are friendly to each other. D．There is no electricity in the whole Gaza because of the war. 【答案】1．D 2．B 3．C 4．D 5．A 【导语】本文主要报道了被称为“加沙牛顿”的15岁少年发明为帐篷供电的照明装置，带给难民光明。 1．细节理解题。根据“He and his family began to live in the tent after the attack (袭击) of Israel.”可知，以色列进攻后，他和他的家人开始住在帐篷里，故选D。 2．细节理解题。根据“His neighbors in the tent camp called him “Gaza’s Newton” because of his talent”以及下文的内容可知，因为他有发明照明的才能，故选B。 3．细节理解题。根据第三段的内容可知将他们的帐篷连接到房子的一侧，让男孩可以爬到房子的顶部，并设置他的两个风扇来发电。然后，把风扇连接到穿过房子的电线上，用开关、灯泡和帐篷里的一块薄木头为他的家人做照明。与C项图片相符。故选C。 4．细节理解题。根据“because he hoped to become a scientist like Newton and invent something that will be good for people of the whole world”可知，因为他希望帮助世界各地的人们，故选D。 5．推理判断题。根据这个男孩发明照明装置可知，他很有创造力。根据最后一段的内容可知，这个男孩想帮助更多的人，可见他很有爱心，故选A。 Scientists have found floating solar panels (浮动太阳能电池板) could provide a huge amount of electricity (电量) if they are put on water. They could also help save water and protect land. Solar panels are used to turn sunlight into electricity. Most solar panels are on land. But recently people have begun to put floating solar panels on water. The scientists studied 114,555 reservoirs (水库) in the world. They covered 30% of these reservoirs with floating solar panels. And then they used computer programs to find out how much electricity they could make a year. “The answer was surprisingly large—more than twice the amount of the energy the US makes in a year,” said one of the scientists. The scientists found floating solar panels would be especially useful when reservoirs were near smaller cities. They could provide all the electricity the cities need. Floating solar panels can also help save water by limiting evaporation (限制蒸发) from reservoirs. Solar panels covering just 30% of the reservoirs could save as much water as 300,000 people would use in a year. There are several other reasons that make floating solar panels a good idea. Solar panels work better when they’re not very hot. The water helps cool the panels so that they make more energy. Putting solar panels on water also means there’s no need to clear land for a solar farm. ________ Covering a reservoir with panels could affect (影响) the plants and animals in the water. It will be important to study how they will affect water in each reservoir. Man-made reservoirs will solve some of those problems. 1．What do we know about the study? A．Scientists were surprised at the results. B．Now most solar panels are put on water. C．114,555 floating solar panels were used in the study. D．Scientists studied 30% of the reservoirs in the world. 2．How does the writer show floating solar panels can save water in Paragraph 4? A．By using sayings. B．By asking a question. C．By giving an example. D．By making a prediction. 3．How many reasons are given in Paragraph 5? A．Four. B．Three. C．Two. D．One. 4．Which of the following can be put in “________”? A．Floating solar panels aren’t perfect. B．The idea is getting popular in the world. C．The idea isn’t as unusual as it might seem. D．The study of floating solar panels are still strange. 5．What is the passage mainly about? A．The importance of clean energy. B．The advice on reservoir protection. C．The way of making use of reservoirs. D．The advantages (优点) of floating solar panels. 【答案】1．A 2．C 3．C 4．A 5．D 【导语】本文主要介绍了科学家发现如果将浮动太阳能板放在水上，它们可以提供大量的电力，同时还有助于节约水资源和保护土地。 1．细节理解题。根据“The answer was surprisingly large—more than twice the amount of the energy the US makes in a year”可知科学家们对结果感到惊讶。故选A。 2．推理判断题。根据“Floating solar panels can also help save water by limiting evaporation (限制蒸发) from reservoirs. Solar panels covering just 30% of the reservoirs could save as much water as 300,000 people would use in a year.”可知是通过举例子来展示浮动太阳能电池板可以节约用水，故选C。 3．细节理解题。根据第5段“Solar panels work better when they’re not very hot. The water helps cool the panels so that they make more energy. Putting solar panels on water also means there’s no need to clear land for a solar farm.”可知讲述了两条原因，第一水有助于冷却太阳能电池板，太阳能电池板在不是很热的情况下工作得更好；第二将太阳能电池板放在水面上也意味着太阳能发电场不会占用土地。故选C。 4．推理判断题。根据“Covering a reservoir with panels could affect (影响) the plants and animals in the water.”可知用太阳能板覆盖水库可能会影响水中的动植物，因此此处在介绍浮动太阳能电池板的局限性，选项A“浮动太阳能电池板并不完美。”符合，故选A。 5．主旨大意题。本文主要介绍了科学家发现如果将浮动太阳能板放在水上，它们可以提供大量的电力，同时还有助于节约水资源和保护土地，因此是介绍的浮动太阳能板的优点，故选D。 Stupid but serious You see a cat sunbathing on the playground. “Hello, kitty!” You smile and walk away. About 100 years ago, a scientist saw the same scene (场景). But he stopped and thought. Later, he won the Nobel Prize (诺贝尔奖). The scientist was Niels Finsen from Denmark (丹麦). He saw a sick cat sleeping in the sun. When the sun moved, the cat moved, too. Why did the cat love the sun so much? To find out the answer, Niels kept watching the cat for days. Amazingly, the cat got better after lots of sunbathing. The sunlight could cure diseases! Then, Niels invented a light to cure human diseases and won the Nobel Prize in 1903. In fact, many great scientific findings start from “stupid” questions and small things in life. Scientists may ask: How many lies does a person tell in a day? How many licks (舔) does it take to eat up a lollipop? Why do roses smell good? What can we learn from animal poop (粪便)? And they take it seriously. They watch, think, and do experiments (实验) until they find an answer. “It’s such a waste of time!” You may say. But think of the great scientist Newton (牛顿). If he just said “Ouch!” and walked away after he was hit by the apple, what might our world be like? 1．What did Niels Finsen see on the playground? A．A bird flying. B．A dog running. C．A cat sunbathing. D．A child playing. 2．What did Niels Finsen do to win the Nobel Prize? A．He helped the sick cat. B．He invented a light for patients. C．He found out the liars. D．He knew why roses smell good. 3．What does the word “cure” in Paragraph 2 probably mean? A．To cause a disease. B．To make people laugh. C．To help someone have a rest. D．To make someone healthy again. 4．Why do scientists ask “stupid” questions and study small things in life? A．To waste time and money. B．To make friends with others. C．To relax themselves. D．To explore something new. 5．Where can you find this passage? A．In a travel guide. B．In a biology textbook. C．In a movie booklet. D．In a history magazine. 【答案】1．C 2．B 3．D 4．D 5．B 【导语】本文是一篇记叙文。文章主要讲述了丹麦科学家尼尔斯·芬森通过观察一只病猫喜欢晒太阳的现象，发现阳光对治疗疾病的重要作用，最终发明了一种光线，并因此获得1903年诺贝尔奖的故事。 1．细节理解题。根据第二段“The scientist was Niels Finsen from Denmark. He saw a sick cat sleeping in the sun.”和“Amazingly, the cat got better after lots of sunbathing.”可知，尼尔斯·芬森看见一只病猫在晒日光浴。故选C。 2．细节理解题。根据第二段“Then, Niels invented a light to cure human diseases and won the Nobel Prize in 1903.”可知，尼尔斯发明了一种光来治疗人类疾病，并于1903年获得诺贝尔奖。故选B。 3．词义猜测题。根据第二段“Amazingly, the cat got better after lots of sunbathing. The sunlight could cure diseases!”可知，晒了几天日光浴后，病猫好转了，也就是说阳光可以治愈疾病；据此可以推断划线单词“cure”意为“治愈”，与选项D“使某人恢复健康”同义。故选D。 4．推理判断题。根据第三段“In fact, many great scientific findings start from “stupid” questions and small things in life.”以及第四段“And they take it seriously. They watch, think, and do experiments until they find an answer.”可知，科学家会问“愚蠢”的问题，研究生活中的小事，他们观察、思考、做实验，然后找到一个答案；据此可以推断，科学家们这样做，是为了探索新事物。故选D。 5．推理判断题。通读全文，尤其根据第一段“You see a cat sunbathing on the playground. ‘Hello, kitty!’ You smile and walk away. About 100 years ago, a scientist saw the same scene. But he stopped and thought. Later, he won the Nobel Prize.”可知，文章主要讲述了丹麦科学家尼尔斯·芬森通过观察一只生病的猫在阳光下晒太阳并逐渐康复，发现阳光可以治疗疾病，进而发明了用于治疗人类疾病的光疗设备，并因此在1903年获得了诺贝尔奖的故事；文章告诉我们，善于观察，用心发现，伟大的科学发现源于生活中的“愚蠢”问题和小事；作为学生，尤其是在生物课上，我们要仔细观察、用心思考；据此可以推断，我们可以在一本生物教科书中找到这篇文章。故选B。 Imagine that the battery on your mobile phone has run out. You can’t make any calls for help and no one can contact you. You are all alone, and well, not quite. Just reach into your pocket and take out a piece of sugar. Put it into the battery, wait a minute and you are back on the phone. Thanks to a couple of American scientists, this situation (情况) could become real. Swadesh Chaudhuri and Derek Lovely have invented the “bacteria (细菌) battery”. This kind of battery gets its power from bacteria that eat sugar and turn it into electricity. “This is a special organism (有机体) ,” Lovely said. “You can get enough electricity to power a cell phone battery for about four days from a spoonful (一勺) of sugar.” In the past, bacteria batteries have been expensive and not long-lasting. But this battery uses a more efficient (有效率的) bacterium that can turn 80 percent of sugar into electrical energy. This is 30 percent more than similar batteries can manage. The bacteria battery could become as small as a household battery. It is also cheap and stable (稳定的) , because sugar can be taken from waste and crops. But the sugar-to-electricity process (过程) is not satisfactory as it could take weeks for the bacteria to change a cup of sugar into electricity. And it produces “greenhouse” gases which pollute the environment. The scientists understand there is a lot more work to be done. “It is still young,” said Lovely. “Where we are now is where solar power was 20 or 30 years ago.” He also believes the battery will be used in scientific equipment at the bottom of the ocean. Ocher’s ideas include using sugar in the blood to run medical devices in the human body and taking sugar from animal waste to provide energy to power homes in the countryside. 1．What’s the passage mainly about? A．An effective way to repair the mobile phone. B．A scientific invention of a new type of battery. C．A clean energy to reduce the carbon dioxide. D．A new kind of mobile phone and its future. 2．Which of the following is NOT the advantage (优点) of the newly-developed battery? A．Convenient. B．Stable. C．Inexpensive. D．Quick. 3．Which of the following are the scientists working on to improve the new battery? A．Increase the bacteria. B．Solve the pollution problem. C．Bring down the price. D．Change the size of the battery. 4．What does the underlined sentence actually mean? A．The bacteria battery shares some similarities with solar energy. B．Scientists will continue their work until they find solar power. C．There is still much room for the improvement of the bacteria battery. D．The bacteria battery will be as popular as solar power in twenty or thirty years. 5．According to the last paragraph, who will find the bacteria battery less useful? A．Divers. B．Farmers. C．Doctors. D．Cooks. 【答案】1．B 2．D 3．B 4．C 5．D 【导语】本文主要讲了一种新发明“细菌电池”，这种电池的能量从吃糖的细菌中获取并将其转化为电能，并具体介绍了这种电池的优缺点。 1．主旨大意题。通读全文，主要讲了Swadesh Chaudhuri和Derek Lovely发明了一种新型“细菌电池”，这种电池的能量从吃糖的细菌中获取并将其转化为电能，并具体介绍了这种电池的优缺点。故选B。 2．细节理解题。根据“The bacteria battery could become as small as a household battery. It is also cheap and stable”可知，这种电池便利，便宜且稳定；通过“But the sugar-to-electricity process is not satisfactory”，可知糖电转换过程很慢。故选D。 3．推理判断题。根据“it could take weeks for the bacteria to change a cup of sugar into electricity. And it produces “greenhouse” gases which pollute the environment.”可知，糖电转换过程很慢以及产生污染环境的“温室”气体，因此可推知，B选项“解决污染问题。”应是科学家们致力于提高的方面。故选B。 4．推理判断题。根据“Where we are now is where solar power was 20 or 30 years ago.”可知，此处说我们现在的情况是20年或30年前太阳能的情况，太阳能技术在二三十年前也是效率不高并且弊端很多，而现在太阳能技术已经很普及了，说明这种新型电池有很大的提升空间。故选C。 5．推理判断题。根据最后一段可知，电池将用于海底的科学设备，其他的想法包括使用血液中的糖来运行人体内的医疗设备，以及从动物提取糖，为农村地区的家庭提供能源。通过选项可知，潜水员，农民和医生都会用上这种电池；而厨师有可能认为电池没那么有用。故选D。 2 同步新教材，周周有练习，月月有重点！ 1 同步新教材，周周有练习，月月有重点！ 学科网（北京）股份有限公司 $ 2025-2026学年一线教师制作新教材英语同步精品系列资料，名师遴选！ 2025-2026学年一线教师制作新教材英语同步精品系列资料，名师遴选！ 学校:___________姓名：___________班级：___________考号：___________ Unit 4 Inventions 单元话题（发明创造）阅读理解进阶练15篇 说明：此专题分三个难度层次，基础入门训练<进阶拓展训练< 能力综合实践，老师根据学生实际情况进行针对性难度训练。 基础入门训练5篇 Solar (太阳能) Backpack Lights Up VillagesTwo engineers in Kenya invented a solar backpack. It uses sunlight to charge (充电) and can provide light for up to 12 hours. So far, 5,000 students in villages without electricity have received these backpacks. A teacher said, “Children can study in the dark with this light.” The project raised $1 million and planned to reach 20 countries by 2025. Tokyo’s New E-Waste Recycling AppA Tokyo company created a mobile app called “E-Cycle”. Users can exchange old electronics (电子设备), such as phones or computers, for coupons (优惠券). In six months, they collected 100 tons of e-waste, including 15,000 phones and 2,000 laptops. The CEO said, “We turn trash into useful materials.” Now, Seoul and Singapore are also using this method. ________A farm in California uses smart robots to grow vegetables. These robots have cameras to find pests and wild grass. The pesticide (杀虫剂) use drops by 70% and crop harvests rise a lot. The farm owner said, “They’re like 1,000 eco-friendly workers who never sleep.” Thirty farming companies have given money to this technology to fight food shortages. 1．In which SECTION of the newspaper can we read the news? A．EDUCATION. B．ENVIRONMENT. C．AMUSEMENT. D．CULTURE. 2．What is the main use of the solar backpack? A．To keep sunlight to make light. B．To give gifts to city students. C．To win a design competition. D．To build new schools in Kenya. 3．How does the “E-Cycle” app encourage recycling? A．By fixing up old phones. B．By offering coupons for old electronics. C．By using more workers to collect trash. D．By educating people about recycling. 4．What is the best heading for the third piece of news? A．California’s Food Shortage Dangers B．Cameras on Robots Help Environment C．Robot Farmers Help Grow Vegetables D．New Challenges in Farming 5．What does the above news focus on? A．Technology competitions in modern life. B．Green solutions for real problems. C．Government decisions on weather changes. D．Development plans for a better life. Used first as a grooming tool, the comb (梳子) has many forms for all types of hair. The type of comb you need will be different depending on your hair, as well as the purpose of the comb. Combing different hair requires a different comb. The earliest use of the comb appeared about 5,000 years ago. In fact, many different kinds of combs came out in history. The ancient Egyptians could make combs. In ancient China, people used combs to show their social status (地位). Over time, combs have become more efficient tools for hair care at present. Today, there are different combs for people to choose from and use. Combs serve different functions for different hair types and styles. People use combs to deal with disordered (凌乱的) or wet hair. Another common use for the comb is to secure hair in one position. During the 1900s, combs were the best choice for keeping hair beautiful. In the earliest time, people made combs from bones of animals. But later, people began to make combs from wood or plastic. Now most people use these two kinds of combs because they are cheap. And high-end combs are made of expensive steel or gold. At present, combs have different shapes and types in different colours. People can choose their favourite combs as they like. But when using combs, we should know we’d better not use others’ combs. And we should wash or brush our combs with clean water as often as possible to keep them clean. 1．What does the type of comb you need depend on? A．Different hair and materials of the comb. B．Different prices and the purpose of the comb. C．Different hair and the purpose of the comb. D．Different prices and materials of the comb. 2．What do people use combs to do at present? A．To follow the fashion. B．To give care to hair. C．To show social status. D．To find the history. 3．What is the meaning of the underlined word “secure” in the passage? A．Keep. B．Appear. C．Cover. D．Fill. 4．Why do most people use combs made of wood or plastic? A．Because they are soft. B．Because they are short. C．Because they are light. D．Because they are cheap. 5．Which can be the best title for the passage? A．The future of the comb B．The usage of the comb C．The development of the comb D．How to choose a comb Madison Checketts, a teenager, has loved the beach since she was a child. But each time on her family vacations, she could easily notice plastic (塑料的) bottles lying on the sand. After learning more about plastic pollution and methods to reduce it, she created an edible (可食用的) water bottle called Eco-Hero. She started working on the project in October, 2021. In her early project, when Checketts asked herself what she could do to make the world a better place, she thought about reducing plastic pollution. Single-use plastic products like water bottles are used and thrown away. After that, plastic water bottles often end up in the sea. Plastic pollution is a main ________ to the sea and wildlife in it. After being selected (挑选) as one of the students from her school to compete in the school district’s science fair, she won first place at a state science fair before advancing to a national competition. An Eco-Hero holds about three-quarters of a cup of water and costs about $1.2 to make. Basically, people make a hole at the top of the gelatinous membrane (胶质 膜 ) and drink the water. “It took many tries to get the membrane strong enough so it would not pop in my hands,”Checketts says. In her free time, Checketts likes to play soccer, draw and spend time with family and friends. When she grows up, she wants to find a way to combine her hobbies and studies, and either be an engineer, a designer or a soccer player. As Checketts thinks about the future of the Eco-Hero, she says she wants to run more tests to make the bottle stronger and bigger. She hopes the Eco-Hero encourages people to think and understand that everyone can make the world a better place. 1．What is the Eco-Hero? A．The name of a kind of plastic. B．The name of plastic pollution. C．The name of a new kind of water bottle. D．The name of a beach. 2．Which word can be filled in the blank of the second paragraph? A．example B．secret C．food D．danger 3．What do we know from the underlined part? A．We should be strong to hold the bottle. B．Making this kind of bottle isn’t easy. C．Checketts is trying out another bottle. D．We can drink more water in this bottle. 4．How will this kind of bottle be in the future? A．Stronger and bigger. B．Thicker and larger. C．Stronger and thicker. D．Bigger and cheaper. 5．What does the fourth paragraph mainly tell us? A．Checketts’ school and family. B．Checketts’ study and hobbies. C．Checketts’ hobbies and dreams. D．Checketts’ friends and teachers. Benjamin Franklin came into the world on January 17, 1706. The family was a big one with several children. Ben went to school when he was 8. Although he did well in his study, there was not enough money for his education. So he left school after two years. But he never stopped learning. In 1742, he invented the famous Franklin stove. Before Ben invented the Franklin stove, people heated their homes with fire in the traditional fireplace (壁炉). Using such kind of fireplace was not good because most of the heat went into the chimney (烟囱). And it was also dangerous because the fire in the fireplace could set the house on fire. Ben came up with the idea of using the baffle (折流板) system to make the heat travel throughout the stove. The Franklin stove used less wood and was safer to heat the room. What’s more, Ben was interested in electricity. After many years of hard work, he finally had a plan to prove (证明) that lightning was electricity and he was successful at last in the kite experiment. Although he had many inventions in life, he never kept them to himself. He wanted to share them with people all over the world. 1．What can we know from the first paragraph? A．Ben went to school in 1716. B．Ben was born in a poor family. C．Ben was the only child of the family. D．Ben was not interested in inventing. 2．How did the invention of the Franklin stove help us? A．It helped us buy more warm houses. B．It helped us read more books. C．It helped us save wood and keep safer. D．It helped us save some time to heat. 3．What does the third paragraph tell us? A．Ben and his stove. B．Ben and his family. C．Ben’s hard life. D．Ben and electricity. 4．Which of the following is TRUE according to the passage? A．Ben kept his inventions to himself. B．Ben went to school for only a year. C．Ben did badly in his study. D．Ben did the kite experiment. 5．Why did the writer write the passage? A．To encourage us to write. B．To tell us to learn more at school. C．To tell us a famous inventor. D．To encourage us to invent something. Summer is coming quickly. It’s the time of the year in which people like to change their clothes for the new season. But how about adding something high-tech (高科技的) to the summer look? Let’s check out some of the ways in which technology (技术) is changing the clothes people wear. A Chinese research team has developed 3D printing techniques that can create clothes with the ability to change temperatures. The technology they used is those materials that change with the environment. The team placed an object in the clothing that could be transformed (转换). It also absorbs (吸收) or gives off heat depending on the wearer’s body temperature. Zhang Yongyi, a Chinese Academy of Sciences researcher, said it was the first time such clothing had been made using a controllable 3D printing method. Scientists in South Korea have developed a kind of wearable clothes that create electricity (电) as wearers keep moving. Of course, it doesn’t take much time or effort for people. Wearers only need to move naturally to power small electronic objects. The inside of the clothes produces energy, which is then stored. Although the clothes have an electronic object built in, they feel completely normal. Kim Sang-Woo, a professor at the Sungkyunkwan University, is proud of his team’s development, saying, “It feels like a normal jacket.” In another amazing study, clothes could serve as devices (设备) themselves. A team of engineering students from the University of Washington, the US, have led these efforts by putting a special thing into cotton T-shirts. The clothing can then send the message that can be received by cellphones. 1．What is the main idea of the text? A．Advice on choosing clothes. B．High-tech changes in clothing. C．The history of 3D printing. D．Famous scientists in technology. 2．What can the Chinese 3D-printed clothes do? A．Change colors. B．Send messages. C．Store energy. D．Control temperature. 3．Why are the South Korean clothes special? A．They make power. B．They feel heavy. C．They use cotton. D．They change shape. 4．What is the structure(结构) of the passage? (P-Paragraph) A． B． C． D． 5．In which section of a magazine (杂志) can you read the text? A．Health and sport. B．History and culture. C．Science and technology. D．Life and environment. 进阶拓展训练5篇 Engineers from MIT and China are working on a project to turn seawater into drinking water. They are using a special device (装置) inspired by the ocean and powered by the sun. The team of scientists wrote about a new invention in a scientific journal called Joule. They are developing a system that uses sunlight to clean seawater and make it safe to drink. The device’s special design makes the water move in swirling patterns (呈漩涡状), like how it moves in the ocean. The sunlight heats up the water and makes it evaporate (蒸发), leaving the salt behind. The vapor (蒸汽) then turns back into water and becomes safe to drink. The salt is constantly washed away so it doesn’t cause any problems. The engineers project (预计) that when they make this system the size of a small suitcase, it can produce about 4 to 6 liters of drinking water per hour. It will work for many years before needing repairs or new parts. With its size and effectiveness (效率), this system could provide drinking water that is cheaper than tap water. Zhang Lenan, a research scientist at MIT’s Device Research Laboratory, says, “We are really excited because, for the first time ever, we have a chance to make water using only sunlight, and it could be cheaper than regular tap water.” 1．The special device can turn seawater into drinking water by ________. A．other devices B．the seawater itself C．the wind D．the solar energy 2．What’s the meaning of the underlined word “inspired” in Paragraph 1? A．制造 B．淹没 C．赋予灵感 D．受驱使 3．What does the third paragraph mainly tell us? A．The salt can’t cause any problems. B．It is easy to change seawater into fresh water. C．How the device changes seawater into drinking water. D．The device can change seawater into drinking water without the sun. 4．What’s the purpose of the fourth paragraph? A．To tell us the device plays a very important role. B．To tell us the device can help people produce tap water. C．To tell us the device is the size of a small suitcase. D．To tell us the device will be practical and long-lasting. 5．What does Zhang Lenan think about making water using only sunlight? A．It will have a bright future. B．It will be as cheap as regular tap water. C．It will make people no longer short of water. D．It will make the sea have less water in the future. Alice Lewis is from America. She is a creative (有创造力的) girl. She likes to invent—to think of new ideas for things that no one has made before, and then make them. One day, Alice’s mother showed her an article which explained how difficult it was to get sick people through the countryside to the hospital in Africa. Alice wanted to help. Alice knew that in North America, before there were cars, horses pulled heavy things on a travois (旧式雪橇) which was made of wood. Alice thought people in Africa could do the same thing. She added wheels to the travois for the African people. To make her travois light to pull, she used bamboo, a plant that grows in Africa, instead of wood. You need to wear a belt (皮带) to pull Alice’s travois. That means you can free your hands to carry or hold other things. Alice thought her travois was perfect for carrying food home from the market, as well as taking people to the hospital. After it was finished, she wrote instructions (说明书) for building one. So people in Africa could make it by themselves. Alice doesn’t know if she wants to be an inventor when she grows up, because she also loves music and writing. But she thinks it’s important for children to learn about inventing at school. 1．What’s Alice’s travois made of? A．Bamboo. B．Wood. C．Iron. D．Glass. 2．The underlined word “light” in the passage means “______” in Chinese. A．明亮的 B．轻便的 C．美观的 D．舒适的 3．What did Alice do after she finished her travois? A．She tried to learn to use it. B．She showed it to her mother. C．She drew a picture of it. D．She wrote the way to make it. 4．Which is the right order of the following sentences according to the passage? ①Alice thought her travois was perfect to take people to hospital in Africa. ②Alice is not sure if she will be an inventor when she grows up. ③Alice wanted to help the people in Africa. ④Alice added wheels to the travois for the African people. A．①②③④ B．④③②① C．③②①④ D．③④①② 5．What is the best title for the passage? A．Helping Others B．A Gift C．A Creative Girl D．A New Invention Imagine the situation. You are driving alone in a desert or on a mountain. You have no idea where you are. You passed the last house two hours ago. Then your car breaks down. It is night and it is cold. You have no mobile phone. What do you do? Well, next time take a GPS with you. This invention may be able to help you. It is a device (设备) which uses satellites to find the user’s position. A GPS cannot start your car, but at least you will know where you are. GPS, which means Global Positioning System, is a small radio receiver. It looks like a mobile phone. You can hold it in your hand, or put it in your pocket. It is sometimes put into a watch or a telephone. We also find GPS devices in cars, planes, or boats. Some of these devices have electronic maps, so you know where you are. For example, in a city they can tell you the name of the street. There are three parts to the Global Positioning System. The first part is the receiver. You can hold it in your hand, or have it fixed into your car, plane, etc. The second part is a group of satellites orbiting the earth. The receiver contacts at least four of the satellites and calculates (计算) its position. The third part of the system is a network of ground stations. They are all over the world. They control the satellites and make sure they are working well. Some people think that in the future the GPS will be as common as the mobile. They are becoming cheaper and more and more accurate (精确的). There are also new uses for the GPS. Perhaps they will become like watches. Everyone will have one and you will never be lost again. 1．What will you do if you are driving alone in a desert or on a mountain? A．Ask the policemen for help. B．Ask your parents for help. C．Ask your geography teacher for help. D．Take a GPS with you. 2．What does GPS look like? A．A small box. B．A small present. C．A mobile phone. D．A small plane. 3．What does the underlined word “position” in paragraph 1 mean in English? A．machine B．system C．decision D．place 4．How many parts are there in the Global Positioning System? A．Two. B．Three. C．Four. D．Five. 5．What’s the best title for the passage? A．Do you know satellites? B．Do you know how to get out of the desert? C．Do you know GPS? D．Do you know your position? When you are outside on a cold winter day, there is nothing more comfortable than having a nice hot meal. But what can you do if you can’t get a hot meal? Don’t worry. A kind of microwave bag can help you. The bag comes from a company called Willtex in Japan. The name of the bag is Willcook. The microwave bag is made up of a bag and a battery (电池). The bag looks like a common computer bag. It is only 160g. And the battery is 120g. If you put food into it, the food can get to 80℃ in just 5 minutes. To use the bag, you need to download a smartphone app (智能手机应用程序) called Hotopia. You can set the temperature between 40℃ and 250℃ with the smartphone app. The battery can help the bag work for about 8 hours. To make the food hot, you need to follow the following steps: First, you need to put the food into the bag. Next, close the bag. Then, make the bag work for about 5 minutes. Finally, open the bag and you can enjoy the hot food. The bag can also keep the temperature of the food in it. So you can keep drinks cool in it in hot days. Would you like to have this kind of bag? 1．What can we know from the first paragraph? A．The name of the bag. B．The use of the bag. C．The shape of the bag. D．The color of the bag. 2．How much does the microwave bag weigh (重) in total? A．40g. B．120g. C．160g. D．280g. 3．Which of the following is TRUE? A．The food in the bag can be very hot. B．The bag can make the food more delicious. C．Hotopia is the name of the battery. D．The bag can only be used for 4 hours. 4．What can we infer from (推断) the passage? A．We can only use the bag in hot days. B．It’s not difficult to use the microwave bag. C．The bag can only work for about 5 minutes. D．The bag can keep the food hot for 5 minutes. 5．Where can we find the passage? A．In a guidebook. B．In a newspaper. C．In a diary. D．In a storybook. Plants can not move like animals, but they communicate and respond to the environment through their own movement—a type of “plant body language.” Scientists have been amazed by these movements and created inventions based on them. Everyone knows sunflowers turn to face the sun as it moves across the sky. This gave engineers the idea to create SmartFlower solar panels. They are in the shape of flowers, and each “petal” (花瓣) is a solar panel. SmartFlower follows the sun all day, which helps produce 40% more energy than normal solar panels. After dark or when there’s bad weather like heavy rain, the “petals” will close up. Some plants, such as ivy (常春藤), can climb walls using sticky pads. The pads help ivy stick to wood, stone, and other surfaces. After studying this plant, scientists created soft climbing robots. Though small, these robots are strong enough to move on different surfaces and turn corners. This allows them to work in hard-to-reach places. Another amazing plant is the exploding cucumber (喷瓜). It has a cool trick. When touched, it shoots seeds up to 6 meters away! Learning from this plant’s “body language”, medical researchers have developed a new way to send medicine to where it’s needed in the body, just as the plants shoot seeds to the right places. Plants may seem quiet and still, but their special movements have inspired real-world inventions. Next time you see a plant, watch its “body language” carefully; you might catch the next scientific breakthrough! 1．Which picture best describes the invention in paragraph 2? A． B． C． D． 2．Where is the climbing robot designed to operate? A．Deep under water. B．Wide farm fields. C．Narrow water pipes. D．Open playgrounds. 3．What is special about the exploding cucumber? A．It can play tricks on others. B．It can send out the seeds far. C．It helps people make medicine. D．It can grow up to 6 meters tall. 4．What does the underlined word “breakthrough” probably mean in Paragraph 5? A．An important discovery. B．A sudden fast movement. C．A tool for studying plants. D．A better way to grow plants. 5．Which would be the best title for the passage? A．Nature’s Behavior B．Plants Have Gone Wild C．Nature’s Language D．Plants Drive Creations 能力综合实践5篇 In these years, electric (电动的) cars are popular in our daily life. But do you know the electric plane? The company Eviation made the world’s first fully electric plane. The plane is called Alice. In September 2022, it made its first flight (飞行) in Washington, the US and flew in the sky for about eight minutes. The plane can carry nine passenger (乘客) and two pilots at the same time. Also it is very quiet and makes almost no waste gases (废气). There are 21,500 small batteries (电池) on the plane. They weigh 4.000 kg, half of the plane’s weight. Together, they make the plane able to fly for one to two hours. Because it is fully electric, it is cheap to fly the plane. But it is very expensive to make the plane. So nobody knows if electric planes will be a common way to travel around in the future. 1．How long did the plane Alice fly for the first time? A．About eight minutes. B．About sixteen minutes. C．About one hour. D．About two hours. 2．Which of the following is TRUE about the plane Alice? A．It makes a lot of noise. B．It makes a lot of waste gases. C．It can fly more than two hours. D．It can carry eleven people at a time. 3．The underlined word “They” refers to “________”. A．the planes B．the batteries C．the passengers D．the waste gases 4．What can we learn from the last paragraph? A．The plane is very popular in the US. B．The plane will be popular in the future. C．People think it is cheap to make the plane. D．People are not sure about the plane’s future. 5．The passage is mainly about ________. A．a popular car B．a famous company C．a fully electric plane D．a common way to travel Using two fans he found at a market, a 15-year-old boy in Gaza has made electricity (电) to light up his family’s tent. He and his family began to live in the tent after the attack (袭击) of Israel. His neighbors in the tent camp called him “Gaza’s Newton” because of his talent. “Newton was sitting under an apple tree when an apple fell on his head. And we here are living in darkness, so I thought of creating light, and did so.” the boy said. Since the boy’s family lived a hard life, they connected (连接) their tent to the side of a house so that the boy could climb onto the roof and set up his two fans to charge batteries (电池). Then, the boy connected the fans to wires (电线) running down through the house and used switches (开关), lightbulbs and a thin piece of wood in the tent to make lighting for his family. It took the boy a while to succeed finally after his first two tries failed. The boy was still very happy that he was able to make this because he can not only help his family but others like them. What’s more, he was also very glad that people in this camp call him ‘Gaza’s Newton’, because he hoped to become a scientist like Newton and invent something that will be good for people of the whole world. 1．When did the boy start living in the tent? A．When he was 15 years old. B．After he found two fans. C．When he made light for his family. D．After his country was attacked. 2．Why did the neighbors call him “Gaza’s Newton”? A．For his talent of making two fans. B．For his talent of making light. C．For his talent of making tents. D．For his talent of helping his country. 3．How did the boy charge batteries? A． B． C． D． 4．Why did the boy hope to be a scientist? A．Because his family could help him a lot. B．Because he wanted to be called “Gaza’s Newton”. C．Because he lived a happy life and had much time. D．Because he hoped to help the people around the world. 5．What can we infer from the passage? A．The boy is creative and caring. B．The poor family was rich before the war. C．The boy’s neighbors are friendly to each other. D．There is no electricity in the whole Gaza because of the war. Scientists have found floating solar panels (浮动太阳能电池板) could provide a huge amount of electricity (电量) if they are put on water. They could also help save water and protect land. Solar panels are used to turn sunlight into electricity. Most solar panels are on land. But recently people have begun to put floating solar panels on water. The scientists studied 114,555 reservoirs (水库) in the world. They covered 30% of these reservoirs with floating solar panels. And then they used computer programs to find out how much electricity they could make a year. “The answer was surprisingly large—more than twice the amount of the energy the US makes in a year,” said one of the scientists. The scientists found floating solar panels would be especially useful when reservoirs were near smaller cities. They could provide all the electricity the cities need. Floating solar panels can also help save water by limiting evaporation (限制蒸发) from reservoirs. Solar panels covering just 30% of the reservoirs could save as much water as 300,000 people would use in a year. There are several other reasons that make floating solar panels a good idea. Solar panels work better when they’re not very hot. The water helps cool the panels so that they make more energy. Putting solar panels on water also means there’s no need to clear land for a solar farm. ________ Covering a reservoir with panels could affect (影响) the plants and animals in the water. It will be important to study how they will affect water in each reservoir. Man-made reservoirs will solve some of those problems. 1．What do we know about the study? A．Scientists were surprised at the results. B．Now most solar panels are put on water. C．114,555 floating solar panels were used in the study. D．Scientists studied 30% of the reservoirs in the world. 2．How does the writer show floating solar panels can save water in Paragraph 4? A．By using sayings. B．By asking a question. C．By giving an example. D．By making a prediction. 3．How many reasons are given in Paragraph 5? A．Four. B．Three. C．Two. D．One. 4．Which of the following can be put in “________”? A．Floating solar panels aren’t perfect. B．The idea is getting popular in the world. C．The idea isn’t as unusual as it might seem. D．The study of floating solar panels are still strange. 5．What is the passage mainly about? A．The importance of clean energy. B．The advice on reservoir protection. C．The way of making use of reservoirs. D．The advantages (优点) of floating solar panels. Stupid but serious You see a cat sunbathing on the playground. “Hello, kitty!” You smile and walk away. About 100 years ago, a scientist saw the same scene (场景). But he stopped and thought. Later, he won the Nobel Prize (诺贝尔奖). The scientist was Niels Finsen from Denmark (丹麦). He saw a sick cat sleeping in the sun. When the sun moved, the cat moved, too. Why did the cat love the sun so much? To find out the answer, Niels kept watching the cat for days. Amazingly, the cat got better after lots of sunbathing. The sunlight could cure diseases! Then, Niels invented a light to cure human diseases and won the Nobel Prize in 1903. In fact, many great scientific findings start from “stupid” questions and small things in life. Scientists may ask: How many lies does a person tell in a day? How many licks (舔) does it take to eat up a lollipop? Why do roses smell good? What can we learn from animal poop (粪便)? And they take it seriously. They watch, think, and do experiments (实验) until they find an answer. “It’s such a waste of time!” You may say. But think of the great scientist Newton (牛顿). If he just said “Ouch!” and walked away after he was hit by the apple, what might our world be like? 1．What did Niels Finsen see on the playground? A．A bird flying. B．A dog running. C．A cat sunbathing. D．A child playing. 2．What did Niels Finsen do to win the Nobel Prize? A．He helped the sick cat. B．He invented a light for patients. C．He found out the liars. D．He knew why roses smell good. 3．What does the word “cure” in Paragraph 2 probably mean? A．To cause a disease. B．To make people laugh. C．To help someone have a rest. D．To make someone healthy again. 4．Why do scientists ask “stupid” questions and study small things in life? A．To waste time and money. B．To make friends with others. C．To relax themselves. D．To explore something new. 5．Where can you find this passage? A．In a travel guide. B．In a biology textbook. C．In a movie booklet. D．In a history magazine. Imagine that the battery on your mobile phone has run out. You can’t make any calls for help and no one can contact you. You are all alone, and well, not quite. Just reach into your pocket and take out a piece of sugar. Put it into the battery, wait a minute and you are back on the phone. Thanks to a couple of American scientists, this situation (情况) could become real. Swadesh Chaudhuri and Derek Lovely have invented the “bacteria (细菌) battery”. This kind of battery gets its power from bacteria that eat sugar and turn it into electricity. “This is a special organism (有机体) ,” Lovely said. “You can get enough electricity to power a cell phone battery for about four days from a spoonful (一勺) of sugar.” In the past, bacteria batteries have been expensive and not long-lasting. But this battery uses a more efficient (有效率的) bacterium that can turn 80 percent of sugar into electrical energy. This is 30 percent more than similar batteries can manage. The bacteria battery could become as small as a household battery. It is also cheap and stable (稳定的) , because sugar can be taken from waste and crops. But the sugar-to-electricity process (过程) is not satisfactory as it could take weeks for the bacteria to change a cup of sugar into electricity. And it produces “greenhouse” gases which pollute the environment. The scientists understand there is a lot more work to be done. “It is still young,” said Lovely. “Where we are now is where solar power was 20 or 30 years ago.” He also believes the battery will be used in scientific equipment at the bottom of the ocean. Ocher’s ideas include using sugar in the blood to run medical devices in the human body and taking sugar from animal waste to provide energy to power homes in the countryside. 1．What’s the passage mainly about? A．An effective way to repair the mobile phone. B．A scientific invention of a new type of battery. C．A clean energy to reduce the carbon dioxide. D．A new kind of mobile phone and its future. 2．Which of the following is NOT the advantage (优点) of the newly-developed battery? A．Convenient. B．Stable. C．Inexpensive. D．Quick. 3．Which of the following are the scientists working on to improve the new battery? A．Increase the bacteria. B．Solve the pollution problem. C．Bring down the price. D．Change the size of the battery. 4．What does the underlined sentence actually mean? A．The bacteria battery shares some similarities with solar energy. B．Scientists will continue their work until they find solar power. C．There is still much room for the improvement of the bacteria battery. D．The bacteria battery will be as popular as solar power in twenty or thirty years. 5．According to the last paragraph, who will find the bacteria battery less useful? A．Divers. B．Farmers. C．Doctors. D．Cooks. 16 同步新教材，周周有练习，月月有重点！ 17 同步新教材，周周有练习，月月有重点！ 学科网（北京）股份有限公司 $