寒假模拟练习Unit 3- 2025-2026学年沪教版（五四学制）八年级英语上册

2025-2026学年八年级英语上册寒假模拟练习Unit 3 上海沪教版新教材（五四学制）含答案 班级 姓名 学号 一、单项选择 1. The teacher asked us ______ we were curious about space travel. 　A. that　　B. if　　C. what　　D. how 2. Marie Curie is one of ______ scientists in history. 　A. the greatest　　B. greater　　C. greatest　　D. a greatest 3. He spent hours ______ how the machine worked. 　A. to wonder　　B. wonder　　C. wondering　　D. wondered 4. I don’t know ______ to solve this problem. It’s too difficult. 　A. what　　B. how　　C. why　　D. where 5. Although it was late, they continued ______ the experiment. 　A. do　　B. did　　C. to do　　D. doing 6. She has never seen ______ invention like this before. 　A. so an amazing　　B. such an amazing　　 C. such amazing an　　D. so amazing an 7. If you ______ more questions, you will understand science better. 　A. ask　　B. asked　　C. will ask　　D. have asked 8. The boy was excited because he ______ his first robot yesterday. 　A. builds　　B. built　　C. has built　　D. had built 9. ______ curiosity leads to great discoveries. 　A. A　　B. An　　C. The　　D. / 10. They didn’t give up ______ the experiment failed three times. 　A. because　　B. although　　C. so　　D. if 11. It’s important for students ______ their own questions. 　A. ask　　B. asking　　C. to ask　　D. asked 12. Look! The light bulb ______ by Edison over 100 years ago. 　A. invented　　B. was invented　　C. is invented　　D. has invented 13. How many ______ do you need for this chemistry experiment? 　A. equipments　　B. pieces of equipment　　 C. piece of equipments　　D. equipment 14. She speaks English ______ than anyone else in our class. 　A. more fluent　　B. fluenter　　 C. more fluently　　D. most fluently 15. I wonder ______ he will come to the science fair tomorrow. 　A. that　　B. whether　　C. what　　D. how 16. We should protect the environment ______ we can leave a better world for future generations. 　A. so that　　B. in order to　　 C. because of　　D. thanks to 17. There isn’t ______ milk left for the experiment. We need to buy some. 　A. many　　B. a few　　C. any　　D. some 18. The scientist explained ______ the chemical reaction happened. 　A. when　　B. why　　C. what　　D. which 19. He is interested in ______ new ways to clean ocean plastic. 　A. find　　B. found　　C. finding　　D. to find 20. By the time we arrived, the lecture on AI ______. 　A. started　　B. has started　　C. had started　　D. was starting 二、根据括号内的提示，用所给单词的正确形式填空。 1. Her ________________ (curious) about stars led her to study astronomy. 2. This discovery was a major ________________ (science) breakthrough. 3. The experiment requires great ________________ (patient). 4. Thomas Edison was a very ________________ (create) inventor. 5. Please handle the chemicals with ________________ (careful). 6. His ________________ (explain) made the theory easy to understand. 7. Many young people are ________________ (interest) in robotics today. 8. The ________________ (invent) of the telescope changed astronomy forever. 9. Success comes from hard work, not just ________________ (intelligent). 10. The results were ________________ (surprise)—no one expected them! 三、按要求改写句子 1. Marie Curie discovered radium.（改为被动语态） 　Radium ________________________ by Marie Curie. 2. The boy is very curious about space.（对划线部分提问） 　________________________ ? 3. What an amazing invention this is!（改为陈述句） 　________________________. 4. connect / wires / carefully / the / must / be（连词成句） 　________________________. 四、阅读短文，根据上下文和首字母提示，填入适当的单词。 Every great discovery begins with a simple question. Scientists are naturally c___1___—they always ask “why?” or “how?”. For example, Isaac Newton became curious when he saw an apple f__2____ from a tree. That moment led to his theory of gravity. Today, young inventors also use curiosity to s_3_____ real-world problems. One student created a device to detect water pollution using s___4___ sensors. Another built a robot that helps elderly people. These projects show that even teenagers can make a d___5___. However, success doesn’t come easily. It takes p___6___, hard work, and the courage to fail. Most importantly, never stop a__7____ questions. As Einstein once said, “I have no special talents. I am only p__8____ passionate.” So keep your mind open, stay curious, and remember: every big idea starts with a s___9___ thought. The future belongs to those who dare to w__10____ “What if…?” 1______2______3______4______5______ 6______7______8______9______10______ 五、阅读理解 （一） Curiosity is not just a feeling—it’s a powerful tool for learning. Studies show that when people are curious, their brains become more active, especially in areas linked to memory and reward. This means curious learners remember information longer. In schools, students who ask questions tend to perform better in science and math. Famous scientists like Stephen Hawking and Jane Goodall all shared one trait: endless curiosity. Hawking explored black holes; Goodall studied chimpanzees in the wild. Their work changed how we see the universe and animals. Today, teachers encourage “inquiry-based learning”—letting students explore topics through questions, not just textbooks. After all, every invention, from the light bulb to the internet, began with someone wondering, “What if…?” 1. What happens in the brain when a person is curious? 　A. It becomes less active.　　　B. Memory and reward areas activate. 　C. It stops working well.　　　D. Only the eyes become alert. 2. According to the passage, curious students usually ______. 　A. dislike science　　　B. perform worse in exams 　C. do better in STEM subjects　　　D. avoid asking questions 3. What did Jane Goodall study? 　A. Black holes　　　B. Chimpanzees　　　C. Light bulbs　　　D. The internet 4. What is “inquiry-based learning”? 　A. Learning only from textbooks. 　B. Memorizing facts without understanding. 　C. Exploring topics through questions. 　D. Watching videos instead of attending class. 5. What is the main idea of the passage? 　A. Curiosity is dangerous. 　B. Great discoveries require money. 　C. Curiosity drives learning and innovation. 　D. Only geniuses can be scientists. （二） Last month, I decided to build a solar-powered phone charger for the school science fair. At first, I didn’t know how to start. I watched online tutorials and read articles about solar energy. My biggest challenge was connecting the small solar panel to the battery correctly. I failed twice—the wires kept coming loose! But I didn’t give up. On the third try, it worked! When I showed it to my classmates, they were amazed. My teacher said, “This shows what curiosity and persistence can do.” I won second prize, but more importantly, I learned that mistakes are part of discovery. Now, I’m thinking about adding a USB port next time. Who knows? Maybe one day I’ll invent something that helps millions! 1. What did the writer build for the science fair? 　A. A wind turbine　　　B. A solar-powered phone charger 　C. A robot dog　　　D. A water purifier 2. What was the biggest problem? 　A. Buying materials　　　B. Connecting the solar panel to the battery 　C. Writing the report　　　D. Finding a topic 3. How many times did the writer fail before succeeding? 　A. Once　　　B. Twice　　　C. Three times　　　D. Four times 4. What did the teacher say? 　A. “You wasted your time.” 　B. “This shows what curiosity and persistence can do.” 　C. “Next time, choose an easier project.” 　D. “Only engineers can build chargers.” 5. What is the writer planning to do next? 　A. Stop doing science projects 　B. Add a USB port to the charger 　C. Sell the charger online 　D. Study biology instead 六、书面表达 好奇心是科学探索的起点。牛顿因苹果落地而思考万有引力，爱迪生因好奇电的用途而发明电灯。在你的生活中，是否也曾因一个“为什么”或“怎么样”而展开探索？也许你曾拆开旧玩具研究内部结构，或为弄清植物生长条件而做小实验。请以“A Curious Mind Leads to Discovery”为题，写一篇不少于80词的英语短文。内容需包括： 1. 描述一次由好奇心引发的探索或小实验； 2. 你在过程中遇到的困难及如何解决； 3. 这次经历带给你的启发或收获。 要求：内容真实，逻辑清晰，语言准确，避免泛泛而谈。 ________________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ 参考答案与范文 第一大题：单项选择 1. B　　2. A　　3. C　　4. B　　5. D　　 6. B　　7. A　　8. B　　9. D　　10. B 11. C　　12. B　　13. B　　14. C　　15. B　　 16. A　　17. C　　18. B　　19. C　　20. C 第二大题：词性转换 1. curiosity　　　2. scientific　　　3. patience　　　4. creative　　　5. care 6. explanation　　7. interested　　　8. invention　　　9. intelligence　　 10. surprising 第三大题：句型转换 1. was discovered 2. What is the boy very curious about? 3. This is an amazing invention. 4. The wires must be connected carefully. 第四大题：短文填空 1. curious　　2. fall　　3. solve　　4. smart　　5. difference 6. patience　　7. asking　　8. passionately　　9. small　　10. wonder 第五大题：阅读理解 （一）1. B　　2. C　　3. B　　4. C　　5. C （二）1. B　　2. B　　3. B　　4. B　　5. B 书面表达范文（参考）： A Curious Mind Leads to Discovery Last winter, I noticed my houseplants grew faster near the window. I wondered:Does sunlight really affect plant growth? So I designed a simple experiment. I placed two identical plants—one by the sunny window, the other in a dark closet. I watered both equally. After two weeks, the window plant was green and tall, while the other turned yellow and stopped growing. At first, I struggled to measure growth accurately. I solved this by marking heights on a ruler each day. This small experiment taught me that observation and testing turn curiosity into real knowledge. Now, I always ask “why?”—because every answer could lead to a new discovery! 学科网（北京）股份有限公司 $