Unit 5 Power of Ideas Section A (1a-2d) 同步分层练2026-2027学年人教版英语九年级上册

**基本信息** 本同步练以“基础+提升”分层设计，通过词汇积累→语用实践→语篇理解的递进路径，融合学科情境与开放设问，强化语言能力与思维品质。 **分层设计** |层次|知识覆盖|设计特色| |----|----------|----------| |基础练|词汇拼写与词形变化|结合学科融合（如太阳能、环境保护）及教材改编题，巩固核心词汇| |提升练|对话补全、语篇理解与开放表达|通过交际对话（发明家主题）、阅读理解（3D打印）及开放设问（未来城市），培养综合语言运用能力|

Unit 5 Power of Ideas Section A (1a-2d) 同步分层练 基础练 Ⅰ. 根据首字母及汉语提示，完成下列单词的拼写 1. [学科融合] Solar panels can turn sunlight into e______ (电) to power our homes. 2. (教材改编题) Press the green b______ (按钮) to start the machine and the red one to stop it. 3. [环境保护] Too much p______ (污染) from cars makes the air unhealthy to breathe. 4. You should wear a helmet to protect your h______ (头) when you ride a bike. 5. My uncle uses a digital c______ (照相机) to take photos of birds in the forest. Ⅱ. 用括号内所给单词的适当形式填空 6. The smart fridge can order food for ______ (it) when it finds that the milk is finished. 7. The telephone is one of the most important ______ (invent) in human history. 8. [科技创新] This new machine can print objects using a special kind of ______ (print). 9. Please put these important ______ (document) into the safe. 10. ______ (thousand) of tourists visit the Great Wall every year to see the ancient defense structures. 提升练 Ⅲ. 补全对话 A: Hi, Ben. What are you reading? B: I'm reading a book about great inventors. 11. ______ A: I like Thomas Edison the most. He had over 1,000 patents in his life. B: 12. ______ A: Because his inventions, like the light bulb, changed the way people live. 13. ______ B: I think the smartphone is the greatest. It puts the whole world in our pockets. A: That's true. 14. ______ B: Well, I think they make life more convenient, but sometimes they make us lazy. A: I agree. But I still believe new ideas can solve many problems. B: 15. ______ I hope to invent something useful in the future too. A. What do you think is the greatest invention? B. Why do you like him the most? C. What invention do you like best? D. How do you think inventions influence our lives? E. I'm not sure if I agree with you. F. That sounds cool! G. Who is your favourite inventor? Ⅳ. 阅读理解 Imagine a world where you can print a toy, a tool, or even a pizza. This is not a scene from a science fiction movie. It is happening now with 3D printing. 3D printing is a technology that allows users to create three-dimensional objects from a digital file. The process is simple: first, you design an object on a computer. Then, the 3D printer reads the design and prints the object layer by layer using materials like plastic, metal, or even chocolate. This technology is changing many industries. In medicine, doctors have used 3D printing to make artificial limbs (假肢) for patients. In the past, making an artificial leg could take weeks. Now, it can be done in hours. In the food industry, some companies are experimenting with printing chocolates and cakes in fantastic shapes. However, 3D printing also brings challenges. One concern is safety. If people can print guns at home, it could be dangerous. Another problem is copyright (版权). If someone prints a copy of a patented product, it is stealing. Despite these problems, the future of 3D printing is bright. It gives common people the power to turn their ideas into real objects. As the technology becomes cheaper, it will become a common tool in every home, just like the ink printer we use today. ( ) 16. What is the main purpose of Paragraph 1? A. To introduce a new movie. B. To lead in the topic of 3D printing. C. To describe a magical world. D. To explain how to print a pizza. ( ) 17. What is the correct order of 3D printing according to Paragraph 2? ① Print the object layer by layer. ② Read the design file. ③ Design an object on a computer. A. ②①③ B. ③②① C. ①②③ D. ③①② ( ) 18. How does 3D printing help the medical industry? A. It makes patients happier. B. It reduces the cost of medicine. C. It helps make artificial limbs faster. D. It trains more doctors. ( ) 19. What is one of the challenges of 3D printing mentioned in the text? A. It is too slow. B. It is too expensive. C. It may cause safety problems. D. It uses too much electricity. Ⅴ. 任务型阅读 阅读下面短文，并用英语回答问题（请注意每小题的词数要求）。 What will the cities of the future look like? Experts believe that technology will change how we live in big ways. First, buildings will be smarter. Windows will change colour automatically to control the sunlight and temperature. Walls might be able to produce fresh air like trees. This will save a lot of energy. Second, transportation will be different. Flying cars are no longer just a dream. Companies are testing small electric aircraft that can fly over traffic jams. Also, self-driving buses will pick up passengers and drive them safely to their destinations. Third, robots will play a bigger role. Robot teachers might help students with their homework. Robot cleaners will keep the streets spotless. There will even be robot farmers that can grow crops without human help. However, the most important thing is that future cities will be greener. There will be more parks and gardens. People will live closer to nature, even in the center of the city. The power of ideas will make our cities not only smarter but also more livable. 20. How will windows in future buildings control sunlight? (不超过10个词) 21. What kind of transportation can help people avoid traffic jams? (不超过5个词) 22. [开放设问] Would you like to live in a future city? Why or why not? (不超过15个词) 参考答案 Ⅰ. 1. electricity 2. button 3. pollution 4. head 5. camera Ⅱ. 6. itself 7. inventions 8. printer 9. documents 10. Thousands Ⅲ. 11-15: G B A D F Ⅳ. 16-19: B B C C Ⅴ. 20. By changing colour automatically. 21. Flying cars. 22. Yes, because technology will make life easier and greener. (答案不唯一) 学科网（北京）股份有限公司 $