Unit 7 The natural world 八年级上册暑假单元分层自测题2026-2027学年译林版八年级英语上册

**基本信息** 译林版八年级上册暑假单元卷，以“The natural world”为主题，融合自然保护热点，覆盖语言能力与思维品质，适配暑假分层巩固。 **题型特征** |题型|题量/分值|知识覆盖|命题特色| |----|-----------|----------|----------| |单项选择|10/10|名词辨析、句子结构（如S+V+O）|基础语言知识与语境应用结合| |完形填空|15/15|环保词汇（如pollution、deforestation）|以地球危机为情境，考查语篇理解| |阅读理解|15/30|帝王蝶迁徙、南极洲生态、大熊猫保护|自然主题素材，培养信息提取与推理能力| |书面表达|1/10|海洋保护（重要性、问题、措施）|结合社会热点，提升语言表达与责任意识|

Unit 7 The natural world 八年级上册暑假单元分层自测题（新教材译林版） 学校:___________班级：___________姓名：___________分数：___________ （时间：90分钟，满分：100分） 一、单项选择。(本大题共10小题，每小题1分，共10分) 1. The Amazon rainforest is famous for its rich _______. Scientists have found thousands of unknown plants and animals there. A. product B. biodiversity C. instrument D. achievement 2. _______ the heavy smog in the northeast, many flights had to be cancelled last weekend. A. Because of B. Thanks to C. Instead of D. According to 3. The government has made some strict laws to _______ the rare wild animals from being killed. A. encourage B. develop C. protect D. realize 4. —Why did you put the books back on the top shelf? —Because I wanted to make _______ for the new magazines. A. space B. sense C. fun D. use 5. The sentence structure of “The storm destroyed the small bridge last night.” is _______. A. S+V B. S+V+O C. S+V+P D. S+V+O+O 6. Which of the following sentences has the same structure as “We call the baby panda Qiqi.”? A. The leaves turn yellow in autumn. B. My father bought me a new dictionary. C. The guide showed us around the wetland. D. The cold weather makes the birds fly south. 7. What can we infer from the sentence “The dead tree provides a home for insects.”? A. Insects kill the tree. B. The tree is still alive. C. Insects live in the tree. D. The tree falls down. 8. The local people are trying their best to reduce water pollution. _______, the river is becoming cleaner. A. In fact B. As a result C. By the way D. On the other hand 9. —Do you think humans will move to another planet in the future? —_______. With technology developing, anything is possible. A. I hope not B. I'm afraid so C. Who knows D. No problem 10. —I feel worried about the melting glaciers (冰川融化) in the poles. —_______ We should save energy in our daily life. A. Take it easy. B. Never mind. C. That's too bad. D. Me too. 二、完形填空。(本大题共15小题，每小题1分，共15分) 阅读下面短文，掌握其大意，然后从各题所给的四个选项（A、B、C和D）中选出一个最佳选项。 The Earth is our home. It is a beautiful planet with blue oceans, green forests and white clouds. However, our home is in 11____. One of the biggest problems is air pollution. Smoke from factories and 12____ from cars makes the air dirty. When it rains, the rain becomes acidic (酸性的). This is called acid rain. Acid rain is 13____ for trees and crops. It can even make rivers and lakes too 14____ for fish to live in. Another serious problem is rubbish. People throw away too much waste every day. Plastic bags and bottles are 15____ in the streets and oceans. Sea animals often mistake plastic for food, which can kill them. Water pollution is also getting worse. Wastewater from cities and farms flows into rivers and seas. This kills 16____ life. In some places, the water is so dirty that it smells 17____. Deforestation (毁林) is happening all over the world. People cut down millions of trees every year for wood or to 18____ new buildings. Without trees, the soil is washed away by rain 19____. This can cause floods. Also, trees take in CO₂ and give out oxygen. Fewer trees mean more CO₂ in the air, which leads to global 20____. What can we do to save our planet? First, we should save 21____ by turning off lights when leaving a room. Second, we should walk or ride bikes instead of driving cars. Third, we must 22 ____rubbish properly and recycle useful things. Finally, we need to plant more trees to make the air 23____. If everyone 24____ a little effort, we can make a big difference. Let’s act now 25____ it is too late! 11. A. danger B. silence C. surprise D. control 12. A. heat B. gas C. noise D. light 13. A. good B. helpful C. harmful D. useful 14. A. salty B. fresh C. deep D. acidic 15. A. somewhere B. anywhere C. everywhere D. nowhere 16. A. plant B. animal C. human D. sea 17. A. sweet B. terrible C. delicious D. strange 18. A. put up B. make up C. take up D. look up 19. A. carefully B. slowly C. easily D. heavily 20. A. warming B. cooling C. changing D. moving 21. A. water B. money C. energy D. time 22. A. deal with B. fill with C. cover with D. compare with 23. A. drier B. cleaner C. colder D. hotter 24. A. takes B. gets C. pays D. makes 25. A. after B. until C. before D. when 三、阅读理解。(本大题共15小题，每小题2分，共30分) A Have you ever seen a “wave” of butterflies? Every autumn, millions of monarch butterflies (帝王蝶) in North America fly south to spend the winter in Mexico. This journey is about 4,000 kilometres long! Monarch butterflies are famous for their orange and black wings. They are not strong fliers, but they travel a long way. How do they know where to go? Scientists believe they use the Sun and the Earth’s magnetic field (磁场) to find the direction. However, monarchs are facing big problems. Their population has dropped by 90% in the past 20 years. One reason is the loss of milkweed (马利筋草). Monarchs lay eggs only on milkweed plants, and caterpillars (幼虫) eat these leaves. But farmers often clear milkweed to grow crops. Another reason is bad weather caused by climate change. Luckily, many people are helping. Schools and families plant milkweed gardens to give monarchs a safe place to grow. Governments in the US, Canada, and Mexico are working together to protect the butterflies’ path. “Everyone can help,” says a scientist. “Even a small garden can save lives.” 26. Where do monarch butterflies spend the winter? A. In North America.B. In Mexico.C. In Canada.D. In Africa. 27. How do monarchs find their way during the long journey? A. By smelling flowers. B. By following other birds. C. By using the Sun and the Earth’s magnetic field. D. By remembering the road. 28. Why do monarchs need milkweed plants? A. They rest under the plants. B. They get water from the plants. C. They lay eggs and feed caterpillars on them. D. They hide from enemies in the plants. 29. What is the main reason for the drop in monarch population? A. Too many predators. B. Loss of milkweed and climate change. C. Pollution in the ocean. D. Hunters catching them. 30. What can we learn from the last paragraph? A. Only scientists can save monarchs. B. Planting milkweed gardens helps. C. Governments should stop farming. D. Monarchs will die out soon. B Antarctica (南极洲) is the coldest, windiest, and driest continent on Earth. About 98% of it is covered with thick ice. The temperature can drop to -89°C! Because of the extreme cold, almost nothing grows on the land. There are no trees, no bushes, and only two kinds of flowering plants. Although the land is empty, the ocean around Antarctica is full of life. Whales, seals, and penguins live there. Penguins are the most famous animals in Antarctica. They cannot fly, but they are excellent swimmers. Emperor penguins are the largest kind. They stay in Antarctica even in winter. The male penguins keep the eggs warm on their feet while the females go to the sea to find food. Scientists from all over the world come to Antarctica to study the ice, the weather, and the animals. They want to understand how the Earth’s climate is changing. The ice in Antarctica holds 70% of the world’s fresh water. If all the ice melted, the sea level would rise by about 60 meters! To protect this special place, many countries signed a treaty (条约) in 1959. It says Antarctica should only be used for peace and science. No military (军事的) activities or mining (采矿) are allowed. Tourists can visit, but they must follow strict rules to keep the environment clean. 31. What is the weather like in Antarctica? A. Hot and wet.B. Cold, windy and dry.C. Warm and rainy.D. Cool and cloudy. 32. Why can’t plants grow well in Antarctica? A. Because of the thick ice. B. Because of the extreme cold. C. Because of the strong winds. D. Because of the dry air. 33. What do male emperor penguins do in winter? A. They swim in the sea to find food. B. They build nests with stones. C. They keep the eggs warm on their feet. D. They fly south for warmth. 34. What will happen if all the ice in Antarctica melts? A. The sea level will rise greatly. B. More animals will move there. C. The weather will become warmer. D. More plants will grow on the land. 35. What is the main purpose of the Antarctic Treaty? A. To allow mining activities. B. To build military bases. C. To protect the environment for peace and science. D. To stop scientists from studying there. C）短文还原 阅读下面短文，从短文后所给的选项中选出能填入空白处的最佳选项，使短文通顺连贯（其中有一项多余）。 Have you ever heard of the Giant Panda National Park? It is a large nature park in China. 36____ It covers about 22,000 square kilometres across Sichuan, Shaanxi and Gansu provinces. The park is home to more than 1,300 wild giant pandas. That is about 72% of the total number of wild pandas in China. 37____ For example, the golden snub-nosed monkey and the snow leopard also live there. Before the park was built, some pandas lived in separate reserves (独立的保护区). Roads and villages sometimes cut through their homes. 38____ Now, with the national park, these areas are connected. Pandas can walk freely between different parts of the park to find food and meet other pandas. 39____ They use cameras and DNA to check on the pandas’ health and population. Local villagers also help. They work as park rangers (护林员) to stop illegal hunting and protect the forest. Visiting the park is not easy. 40____ This helps to keep the wild animals safe and the environment undisturbed. A. Scientists do a lot of research in the park. B. It is one of the largest parks of its kind in the world. C. But it is not just pandas that live in the park. D. This made it hard for pandas to move around. E. Most areas are closed to the public. F. Pandas mainly eat bamboo. 四、选词填空(本大题共5小题，每小题1分，共5分) 选用方框中所给的单词或短语并用其适当形式填空，有一个单词或短语是多余的。 disappear, in danger, provide...with, cut down, realize, pollute 41. Factories __________ the river with chemical waste. We must stop them. 42. The thick forest __________ many birds __________ safe places to nest. 43. Many ancient traditions are __________ because young people move to cities. 44. The government has __________ that protecting wetlands is very important. 45. People __________ too many trees for wood, so the land is turning into desert. 五、语法填空(本大题共10小题，每小题1分，共10分) 阅读下面短文，在空白处填入一个适当的单词或括号内单词的正确形式。 Last month, our class took a trip to the Yellow Mountain. It was an 46__________ (amaze) experience. We started climbing early in the morning. The air was cool and fresh. Along the way, we saw tall pine trees growing out of the rocks. Our teacher told us that these trees 47__________ (be) hundreds of years old. When we reached the top, we were tired 48__________ happy. We could see a sea of clouds below us. It looked like a white dream world. Suddenly, the sun rose, turning the clouds gold. Everyone shouted 49__________ excitement. In the afternoon, we visited a small village at the foot of the mountain. The villagers 50__________ (grow) tea plants on the hills. They explained how they picked tea leaves 51__________ (careful) by hand. We tried some local green tea. It tasted sweet and 52__________ (refresh). Our teacher reminded us 53__________ (not leave) any rubbish. “Nature 54__________ (give) us so much beauty,” he said. “We must protect it.” On 55__________ (we) way back, we all agreed to be more environmentally friendly in our daily lives. 六、任务型阅读(本大题共5小题，每小题2分，共10分) 阅读下面短文，并根据短文内容回答问题 (No more than 8 words)。 Coral reefs (珊瑚礁) are like underwater rainforests. They are home to about 25% of all ocean life, even though they cover only 1% of the ocean floor. Colourful fish, tiny shrimps, and sea turtles all live among the corals. Corals look like rocks or plants, but they are actually animals. They are made up of thousands of tiny polyps (珊瑚虫). Polyps build hard skeletons (骨骼) to protect themselves. Over hundreds of years, these skeletons form large reefs. However, coral reefs are in great danger. Climate change makes the ocean water too warm. When water gets too hot, corals turn white and die. This is called coral bleaching (珊瑚白化). Pollution from ships and plastic waste also hurts corals. We can help save coral reefs. First, we should use less plastic and recycle more. Second, when visiting coral reefs, do not touch or step on them. Third, support groups that protect the ocean. Small actions can make a big difference. 56. What are coral reefs compared to in the passage? ___________________________________________________________ 57. Are corals plants or animals? ___________________________________________________________ 58. What causes coral bleaching according to Paragraph 3? ___________________________________________________________ 59. How many ways to help save coral reefs are mentioned? ___________________________________________________________ 60. What is the passage mainly about? ___________________________________________________________ 七、完成句子(本大题共5小题，每小题2分，共10分) 根据中文提示，用本单元所学句型完成下列句子。 61. 森林为许多野生动物提供食物和栖息地。(provide...with...) ___________________________________________________________ 62. 人类活动导致全球变暖成为一个严重的问题。(lead to) ___________________________________________________________ 63. 我们必须采取措施减少空气污染。(take action) ___________________________________________________________ 64. 没有水，地球上就不会有生命。(there will be) ___________________________________________________________ 65. 天气如此寒冷以至于湖面结了冰。(so...that...) ___________________________________________________________ 八、书面表达(本大题共1小题，共10分) 假如你是校英语报的小记者，请根据以下提示写一篇关于“保护海洋”的短文，呼吁同学们行动起来。 提示： 1. 海洋的重要性（提供食物、调节气候等）； 2. 海洋面临的问题（塑料污染、过度捕捞等）； 3. 我们能做什么（少用塑料袋、参与清洁活动等）。 注意： 1. 词数90左右，开头已给出，不计入总词数； 2. 文中不得出现真实的人名、校名。 Save the Oceans The ocean covers over 70% of our planet. It is very important to all living things. ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 参考答案 一、单项选择 1-5 BACAB 6-10 DCBCD • 考点：名词辨析、介词短语、动词词义、固定搭配（make space for）、句子结构（S+V+O）。 • 第6题考察S+V+O+C结构，D选项“The cold weather makes the birds fly south”与例句结构一致。 二、完形填空 11-15 ABCDC 16-20 DBCCA 21-25 CABDC • 文章主题：环境保护。 • 易错题：19题考察副词修饰被动语态，土壤容易被冲走，选easily；24题固定搭配make an effort。 三、阅读理解 26-30 BCCBB 31-35 BBCAC 36-40 BCDAE (F选项为多余项，干扰项为熊猫的食物，文中未提及此细节) • A篇为说明文，关于帝王蝶迁徙；B篇为说明文，关于南极洲；C篇为信息还原，关于大熊猫国家公园。 四、选词填空 41. pollute 42. provides; with 43. disappearing 44. realized 45. have cut down • 考点：时态（现在完成时表结果），固定搭配。 五、语法填空 46. amazing47. were48. but49. in 50. grew / grow (语境允许一般现在时或过去时，但结合trip last month，建议grew) 51. carefully52. refreshing53. not to leave54. gives / has given 55. our • 考点：形容词辨析（-ing修饰物）、时态一致性、非谓语动词（remind sb not to do）、代词。 六、任务型阅读 56. Underwater rainforests. 57. Animals. 58. Too warm ocean water. / Climate change. 59. Three. 60. Coral reefs and their protection. / Saving coral reefs. • 注意字数限制，尽量使用原文词汇。 七、完成句子 61. Forests provide many wild animals with food and shelter. 62. Human activities lead to global warming as a serious problem. 63. We must take action to reduce air pollution. 64. Without water, there will be no life on Earth. 65. The weather is so cold that the lake is frozen / freezes over. 八、书面表达（参考范文） Save the Oceans The ocean covers over 70% of our planet. It is very important to all living things. It provides us with seafood and produces much of the oxygen we breathe. Besides, it plays a key role in controlling the global climate. However, our oceans are facing serious problems. Plastic waste is killing fish and birds. Moreover, overfishing has led to a sharp drop in the number of many sea creatures. As students, we can help. First, say no to plastic bags and use reusable bottles. Second, take part in beach clean-up activities if possible. Let's work together to protect the blue heart of our world! 学科网（北京）股份有限公司 $