Unit4分层练习2024-2025学年沪教版（2024）七年级英语上册

Unit4分层练习2024-2025学年沪教版（2024）七年级英语上册 一、基础巩固（共20分，难度系数：★☆☆☆☆） （一）单项选择（每题1分，共5分） 1. The ______ is the coldest place on Earth, with ______ temperatures all year round. A. desert; freezing B. north pole; freezing C. planet; wide D. area; harmful 2. Our school ______ students ______ clean drinking water every day. A. provides; with B. explores; for C. protects; from D. burns; with 3. ______ of animals lose their homes because of deforestation (森林砍伐). A. Billion B. Hundred C. Hundreds D. Billions 4. The ______ shows that over 70% of the Earth’s surface ______ water. A. fact file; is covered by B. website; covers C. system; provides D. file; explores 5. ______ , plastic pollution is not only harmful to sea life but also to humans. A. As far as we know B. What's more C. In fact D. For example （二）用所给词的适当形式填空（每题1分，共5分） 6. The Sahara is one of the largest ______ (desert) in the world, covering a huge ______ (area). 7. Scientists are trying to ______ (explore) the ______ (amazing) secrets of the solar system. 8. If we keep using too many ______ (plastic) bags, ______ (pollution) will get worse. 9. The river is about 50 ______ (metre) ______ (wide), and it provides water for the village. 10. Many old trees ______ (cut down) last year, which made the local people very sad. （三）根据汉语意思完成句子（每空1分，共10分） 11. 据我们所知，宇宙中只有地球有生命。 ______ ______ ______ ______ ______, only the Earth has life in the universe. 12. 这个网站提供了大量关于保护鲸鱼的信息。 The ______ ______ lots of information on ______ ______. 13. 沙尘暴会吹走土壤，对农作物有害。 ______ can ______ ______ the soil and are ______ to ______. 二、能力提升（共30分，难度系数：★★☆☆☆） （一）完形填空（每题2分，共10分） Scientists have been studying the solar system for ______ 14 years. As far as we know, Earth is the only planet with life. It ______ 15 about 510 million square kilometres, and 71% of its surface ______ 16 water. But now, our planet is in trouble. Plastic pollution is getting worse—______ 17 of plastic bags and bottles are found in oceans, harming whales and other sea animals. What’s more, people burn too much oil and gas, which causes the ______ 18 to rise. We must protect Earth. It’s the only home we have. 14. A. billion B. hundreds C. million D. thousand 15. A. reaches B. covers C. provides D. explores 16. A. is covered by B. covers C. provides D. disappears 17. A. hundreds B. billions C. thousands D. millions 18. A. ground B. groundwater C. sea level D. area （二）阅读理解（每题2分，共10分） Fighting Plastic Pollution Plastic pollution is a big problem for our planet. Every year, about 8 million tons of plastic end up in oceans. This harms sea life—whales, turtles, and even small fish can get hurt by eating plastic. To solve this, many countries are taking action. For example, some have stopped using single-use plastic bags. Stores now provide cloth bags instead. What’s more, a new website helps people learn how to reduce plastic use, like reusing bottles and avoiding plastic straws. As students, we can do our part too. Remember to bring your own bags when shopping, and never throw plastic into rivers. Small actions can make a big difference! 19. How much plastic ends up in oceans every year? A. 8 thousand tons B. 8 million tons C. 8 billion tons D. 8 hundred tons 20. What kind of sea animals are harmed by plastic? A. Whales and turtles B. Butterflies C. Emperors D. Grains 21. What do some countries do to fight plastic pollution? A. Burn plastic B. Stop using single-use plastic bags C. Explore oceans D. Hunt sea animals 22. The underlined phrase "single-use" means ______ in Chinese. A. 可回收的 B. 一次性的 C. 可降解的 D. 重复使用的 23. What can students do to help? A. Throw plastic into rivers B. Use more plastic straws C. Bring their own bags D. Burn plastic bottles （三）语法填空（每空1分，共10分） The desert is a very dry place. It hardly rains, and temperatures can be very high in the day and ______ 24 (freeze) at night. But even here, some animals live—like snakes and lizards. People are trying to explore deserts to find ______ 25 (solve) to water problems. Some countries use solar power to get water from ______ 26 (groundwater). What’s more, scientists are planting special plants that can grow in dry soil to stop sandstorms from ______ 27 (blow) away the land. A desert website says: "Protecting deserts is as important as protecting oceans. Every ______ 28 (generation) should do their part." 三、拓展拔高（共20分，难度系数：★★★☆☆） （一）书面表达（10分） 请以“Protect Our Planet”为题，写一篇短文，呼吁保护地球，需包含以下词汇中的至少6个：pollution, protect, plastic, provide, harmful, solar system, solution。 要求：80词左右，语句通顺，语法正确。 __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ （二）句型转换（每题2分，共10分） 29. Humans have polluted the river.（改为被动语态） The river ______ ______ by humans. 30. We can protect animals by stopping hunting.（对划线部分提问） ______ ______ we protect animals? 31. The desert covers an area of 9 million square kilometres.（改为同义句） The desert has an ______ ______ 9 million square kilometres. 32. It’s amazing that there are billions of stars in the solar system.（改为感叹句） ______ ______ it is that there are billions of stars in the solar system! 33. Plastic bags are harmful to the environment.（改为反意疑问句） Plastic bags are harmful to the environment, ______ ______? 答案及解析 一、基础巩固 1. B（北极“north pole”是地球上最冷的地方，“freezing”表示“极冷的”，符合语境） 2. A（固定搭配“provide sb. with sth.”表示“为某人提供某物”） 3. C（“hundreds of”表示“成百上千的”，后接可数名词复数） 4. A（“fact file”表示“事实档案”，“is covered by”表示“被……覆盖”，符合语境） 5. B（“what's more”表示“此外”，用于补充说明，符合逻辑） 6. deserts; area（“one of + 复数名词”表示“……之一”；“area”表示“面积”） 7. explore; amazing（“try to do sth.”后接动词原形；“amazing”修饰“secrets”） 8. plastic; pollution（“plastic bags”表示“塑料袋”；“pollution”是不可数名词） 9. metres; wide（“50 metres”后接形容词“wide”表示宽度） 10. were cut down（被动语态，“last year”提示用一般过去时） 11. As far as we know（固定短语“据我们所知”） 12. website provides; protecting whales（“website”表示“网站”；“protecting whales”表示“保护鲸鱼”，介词后接动名词） 13. Sandstorms; blow away; harmful; grains（“sandstorms”表示“沙尘暴”；“blow away”表示“吹走”；“harmful to grains”表示“对农作物有害”） 二、能力提升 14. A（“billion”表示“十亿”，符合“研究太阳系”的时间长度） 15. B（“cover”表示“覆盖”，指地球的表面积） 16. A（“is covered by”表示“被……覆盖”，地球表面71%被水覆盖） 17. D（“millions of”表示“数百万的”，修饰塑料垃圾数量） 18. C（“sea level”表示“海平面”，燃烧油气会导致海平面上升） 19. B（原文提到“about 8 million tons of plastic end up in oceans”） 20. A（原文提到“harming whales and other sea animals”） 21. B（原文提到“some have stopped using single-use plastic bags”） 22. B（“single-use”表示“一次性的”，符合语境） 23. C（原文建议“bring your own bags when shopping”） 24. freezing（“freezing”表示“极冷的”，与“high in the day”对比） 25. solutions（“solutions to...”表示“……的解决方案”） 26. groundwater（“groundwater”表示“地下水”，不可数名词） 27. blowing（“stop...from doing sth.”表示“阻止……做某事”） 28. generation（“every generation”表示“每一代人”） 三、拓展拔高 （一）书面表达参考范文 Protect Our Planet Our planet is in the solar system. But pollution, like plastic pollution, is harmful. Factories provide us with goods but also make harmful waste. We must protect Earth—we can use less plastic and find green solutions. Let’s save our home! （解析：包含“planet, solar system, pollution, plastic, harmful, protect, provide, solutions”等词汇，符合要求） （二）句型转换 29. has been polluted（现在完成时被动语态：have/has + been + 过去分词） 30. How can（对方式提问用“how”，情态动词“can”提前） 31. area of（“have an area of”与“cover an area of”同义） 32. How amazing（感叹句结构：How + 形容词） 33. aren’t they（反意疑问句“前肯后否”，主语用代词“they”） 1 学科网（北京）股份有限公司 $$