Unit 5 Power of Ideas Section A (3a-3d) 同步分层练2026-2027学年人教版英语九年级上册

**基本信息** Unit 5 Power of Ideas Section A同步分层练以“基础+提升”双层次设计，实现从核心语言知识到综合语用能力的递进巩固，适配新授课教学目标，助力语言能力与思维品质发展。 **分层设计** |层次|知识覆盖|设计特色| |----|----------|----------| |基础练|核心词汇（如distance, affect/effect）、基础语法（被动语态）|单项填空聚焦单点突破，5题精准巩固课内基础知识点| |提升练|交际用语、语篇理解（逻辑推理、信息获取）|补全对话创设真实交际情境，完形填空与阅读理解实现从句子到语篇的能力进阶，19题综合考查语言应用与思维能力|

Unit 5 Power of Ideas Section A (3a-3d) 同步分层练 基础练 Ⅰ. 单项填空 ( ) 1. The first airplane ______ by the Wright brothers in 1903, which opened the era of human flight. A. invents B. invented C. is invented D. was invented ( ) 2. The math competition was very difficult, but Tom worked it out ______ with his excellent skills. A. in seconds B. on time C. by chance D. in person ( ) 3. — Excuse me, could you tell me the ______ from here to the nearest subway station? — Sure. It’s about 500 meters. You can walk there in 5 minutes. A. price B. weight C. distance D. height ( ) 4. Lack of sleep ______ your ability to concentrate, and this bad habit has a negative ______ on your study. A. affects; affects B. effects; affects C. affects; effects D. effects; effects ( ) 5. — I think the Internet is the most important invention in human history. — ______. It has completely changed the way we live, work, and communicate. A. I don’t agree B. I’m not sure C. That’s right D. Never mind 练提升 Ⅱ. 补全对话 A: Hi, Linda. I heard you visited the Science and Technology Museum last weekend. How was it? B: It was fantastic! 6. ______ A: Really? What kind of robots did you see? B: I saw a robot that can cook noodles and another one that can play chess with people. A: 7. ______ It seems that robots will do more and more work for us. B: Exactly. 8. ______ A: I think the most important invention is the Internet. It connects the whole world. B: 9. ______ But I think artificial intelligence (AI) might be even more important in the future. A: Maybe you are right. With the power of ideas, who knows what we will invent next? B: 10. ______ We should keep learning and creating. A. What do you think is the most important invention? B. I saw many amazing robots there. C. I can’t wait to see it. D. That sounds interesting. E. I disagree with you. F. It’s hard to imagine life without it. G. Do you like robots? Ⅲ. 完形填空 What will you do if you suddenly drop your ice cream on the ground? You might feel sad and just throw it away. But what if you could pick it up and eat it? This sounds like a magic trick, but it is becoming a reality thanks to a new invention—an edible (可食用的) spoon. The edible spoon is a great example of how small ideas can solve big problems. Every year, billions of plastic spoons are thrown away, causing serious pollution. To 11 this problem, an Indian company invented a spoon made of flour, water, and salt. The spoon looks and feels like a normal one. It is strong enough to 12 soup or yogurt. If you don't want to eat it after using it, it will 13 in the soil within a few days, leaving no 14 behind. The inventor got the idea when he saw the huge amount of plastic waste on the beach. He wanted to create something that was both useful and environmentally friendly. This invention is not only good for the Earth, but it also 15 money because it is cheap to produce. Using the power of ideas, we can turn waste into treasure. This spoon teaches us that we don't need to be a scientist to 16 the world. Everyone can think of ideas to make life better. The key is to observe (观察) the problems around us and try to 17 them. The edible spoon is just the beginning. Scientists are now working on edible cups, plates, and even chopsticks. These inventions show that creativity has no 18. With a little imagination, we can create a greener and cleaner future. So, the next time you face a problem, remember that a good idea might be just around the 19. Let’s use our brains and be the 20 of our own lives. ( ) 11. A. cause B. solve C. find D. avoid ( ) 12. A. drink B. pour C. hold D. boil ( ) 13. A. break down B. turn up C. give in D. put off ( ) 14. A. taste B. smell C. color D. pollution ( ) 15. A. saves B. wastes C. costs D. earns ( ) 16. A. destroy B. change C. rule D. visit ( ) 17. A. forget B. create C. solve D. ignore ( ) 18. A. price B. time C. limits D. energy ( ) 19. A. corner B. park C. school D. office ( ) 20. A. enemies B. inventors C. students D. workers Ⅳ. 阅读理解 When we talk about ancient Chinese inventions, we usually think of paper, gunpowder, the compass, and printing. But there is another important invention that changed the way people traveled: the kite. The kite was invented by the ancient Chinese about 2,300 years ago. According to legend, the great philosopher Mozi spent three years making a wooden bird that could fly. Later, Lu Ban improved the design by using bamboo and silk, making the kite lighter and easier to fly. At first, kites were not used for fun. They had practical purposes. During the Warring States Period, a general named Han Xin used a kite to measure the distance from his camp to the enemy's palace. He needed to dig a tunnel to enter the palace secretly, and the kite helped him calculate the length. Kites were also used for scientific research. In the 18th century, Benjamin Franklin flew a kite in a thunderstorm to prove that lightning was electricity. This famous experiment changed our understanding of nature. Today, kites are popular all over the world. People fly them for entertainment and sport. The invention of the kite shows the power of ideas. From a military tool to a toy, the kite has flown through history and continues to bring joy to people of all ages. ( ) 21. Which of the following was NOT a material used by Lu Ban to improve the kite? A. Wood. B. Bamboo. C. Silk. D. Iron. ( ) 22. [事件排序] What is the correct order of the development of the kite? a. Lu Ban improved the kite with bamboo and silk. b. Mozi made a wooden bird that could fly. c. Kites were used to measure distance in wars. d. Benjamin Franklin used a kite for his experiment. A. a-b-c-d B. b-a-c-d C. c-a-b-d D. d-c-b-a ( ) 23. What was the original purpose of kites according to the text? A. For entertainment and sport. B. For measuring distance and military use. C. For scientific experiments only. D. For sending messages. ( ) 24. [后续推衍] What might the writer talk about next? A. How to make a kite at home. B. Other ancient Chinese inventions. C. The history of paper-making. D. Why kites are popular in China. 参考答案 Ⅰ. 1-5: D A C C C Ⅱ. 6-10: B D A F C Ⅲ. 11-15: B C A D A 16-20: B C C A B Ⅳ. 21-24: A B B B 学科网（北京）股份有限公司 $