Unit 7 The natural world 单元测试 2025-2026学年译林版英语八年级上册

译林版八年级上册英语Unit 7The natural world单元提优测试卷 一、单项选择(共15小题,每小题1分,满分15分) 从A、B、C、D四个选项中,选出可以填入空白处的最佳选项。 1. Wetlands can _ large amounts of water and keep the ecosystem balanced in dry seasons. A. store B. trap C. return D. waste 2. Cutting down too many trees _ many wild animals to lose their living places. A. makes B. leads to C. causes D. results in 3. The red-crowned crane is a _ bird in China; it’s our national treasure. A. harmful B. noisy C. rare D. balanced 4. —What’s the best way to protect the natural world? —We should try our best to _ environmental pollution. A. get rid of B. slow down C. put off D. take up 5. It’s necessary for us to learn more _ about protecting wetlands. A. knowledge B. knowledges C. skill D. skills 6. Factories mustn’t pour _ into rivers because it will destroy the water ecosystem. A. wastewater B. clean water C. rainwater D. fresh water 7. —Why are wetlands called “the kidneys of the earth”? — Because they can _ the dirty water and make it clean again. A. kill B. damage C. purify D. prevent 8. _, many rare animals are dying out because of climate change and human activities. A. Luckily B. Sadly C. Happily D. Suddenly 9. The chemical factory was closed because it _ the environment seriously. A. harms B. harmed C. returns D. created 10. We plan to _ a volunteer team to plant more trees around the local wetland. A. set up B. break down C. take away D. put up 11. The _ of the ocean is very complex, including plants, animals and non-living things. A. ecosystem B. climate C. knowledge D. weather 12. Green plants can take in _ and give out oxygen to make the air fresh. A. oxygen B. carbon dioxide C. mud D. coral 13. Wetlands _ a safe living environment for thousands of wild animals. A. provide B. offer to C. give D. supply with 14. Protecting wetlands well can _ floods and protect people’s homes in rainy seasons. A. prevent B. cause C. lead to D. create 15. Some people don’t know wetlands are important, _ they still do things that hurt them. A. so B. but C. or D. and 二、完形填空(共15小题,每小题1分,满分15分) 阅读下面短文,掌握其大意,然后从各题所给的A、B、C、D四个选项中,选出最佳选项。 Wetlands are one of the most important parts of the natural world. They are home to many kinds of wildlife, _1_ red-crowned cranes, ducks and frogs. Wetlands can _2_ lots of water when it rains heavily, so they can prevent floods in some areas. Plants in wetlands are very useful. They can trap carbon dioxide and produce oxygen for us to breathe. _3_, they can also clean the wastewater and improve water quality. That’s why wetlands are called “the kidneys of the earth” and “the lungs of the earth” sometimes. However, wetlands are in great danger now. Many people cut down trees around wetlands or fill wetlands with _4_ to build houses and farms. This _5_ the living space of wild animals greatly. _6_ some factories pour harmful chemicals and wastewater into wetlands, which makes the water _7_ and kills many aquatic animals. What’s worse, the changing _8_ also breaks the balance of the wetlands’ ecosystem. It’s time for us to take action to protect wetlands. We should _9_ people to realize the importance of wetlands. We can also _10_ some volunteer groups to plant more green plants near wetlands. We need more _11_ about how to protect wetlands scientifically. And we should tell everyone that polluting wetlands is _12_ to both animals and humans’ health. _13_ we protect wetlands well, wild animals will have a better home, and our living environment will become _14_. Let’s work together to save the natural world, _15_ we will lose these precious natural areas forever. 1. A. including B. include C. includeing D. included 2. A. return B. store C. get rid of D. slow down 3. A. Sadly B. Happily C. Besides D. However 4. A. coral B. mud C. lung D. reef 5. A. increases B. reduces C. creates D. holds 6. A. Also B. But C. Or D. So 7. A. clean B. fresh C. dirty D. clear 8. A. ecosystem B. climate C. knowledge D. wildlife 9. A. warn B. help C. ask D. force 10. A. set up B. close down C. lead to D. get rid of 11. A. knowledge B. skills C. wetlands D. factories 12. A. helpful B. harmful C. rare D. balanced 13. A. If B. Because C. Though D. So 14. A. worse B. more harmful C. better D. noisier 15. A. and B. but C. or D. so 三、阅读理解(共12小题,每小题2分,满分24分) 阅读下列短文,从每题所给的A、B、C、D四个选项中,选出最佳选项。 A篇 Wetlands are one of the most valuable natural resources on our planet. They play an important role in maintaining the earth’s ecosystem balance and are often called “the kidneys of the earth” because they can clean dirty water and filter harmful substances like chemicals and waste. Besides, wetlands can store large amounts of water during heavy rains and release it slowly in dry seasons, which helps prevent floods in nearby areas and keep the soil moist. What’s more, they provide a safe and comfortable home for thousands of kinds of wildlife, including rare birds like red-crowned cranes, various fish, frogs and many special plants that can only grow in wet environments. However, wetlands are facing serious threats from human activities in recent years. Many people fill wetlands with mud and sand to build houses, farms or roads, which makes wetlands smaller and smaller. Some factories also pour untreated wastewater and toxic chemicals into wetlands, polluting the water and killing a lot of aquatic animals and plants. In addition, overfishing, cutting down trees around wetlands and illegal hunting further destroy the balance of the wetland ecosystem, putting many species at risk of extinction. To protect wetlands, many countries around the world have taken active action. They set up nature reserves to keep wetlands safe from over-development and human destruction. Schools and communities also organize educational activities to teach people about the importance of wetlands and how to protect them. More and more people begin to join in protecting wetlands by planting trees, reducing pollution and refusing to take part in activities that harm wetland areas. Protecting wetlands is not only protecting wildlife and plants, but also protecting our own living environment and ensuring a better future for humans. 1. Why are wetlands called “the kidneys of the earth”? A. They can store lots of water for dry seasons. B. They can clean dirty water and filter harmful things. C. They are home to thousands of rare plants. D. They help keep the soil dry in rainy seasons. 2. Which of the following is NOT a threat to wetlands? A. Filling wetlands with mud to build houses. B. Pouring untreated wastewater into wetlands. C. Setting up nature reserves for wetland protection. D. Cutting down trees around wetland areas. 3. What do countries do to protect wetlands according to the passage? A. They encourage overfishing in wetland waters. B. They build more farms and roads on wetlands. C. They set up nature reserves to protect wetlands. D. They cut down trees to make wetlands larger. 4. What’s the main idea of the passage? A. The importance of wetlands and effective ways to protect them. B. How wetlands are destroyed by natural disasters. C. Why people prefer to live near wetland areas. D. The different kinds of plants in wetland ecosystems. B篇 Giant pandas are one of the world’s most beloved and rare animals, and they are also a national treasure of China. With their unique black-and-white fur and cute round faces, they have won the hearts of people all over the world. Most giant pandas live in the dense bamboo forests of Sichuan, Shaanxi and Gansu provinces in China, where the climate is cool, wet and quiet—perfect for bamboo growth and their daily life. Bamboo is the main food of giant pandas, making up over 99% of their diet. They spend about 12 to 14 hours a day eating bamboo, and they can eat 12 to 38 kilograms of it every day! They have special sharp teeth and strong jaws that help them chew the hard bamboo stems and leaves easily. Besides eating, pandas usually spend the rest of their time resting or sleeping in the bamboo forests to save energy, as bamboo provides relatively little nutrition. Giant pandas are usually gentle and quiet animals. Although they are large and heavy, they are very good at climbing trees, even when they are young cubs. They usually live alone, wandering around the bamboo forests to find food and rest. But during the mating season (usually in spring), male and female pandas will get together to look for partners. After a gestation period of about 95 to 160 days, female pandas will give birth to one or two cubs, but usually only one cub can survive due to the mother’s limited energy and milk supply. In the past, the number of giant pandas dropped quickly because of habitat loss (caused by deforestation and human development) and illegal poaching. Luckily, with the help of the Chinese government and international organizations, many nature parks and protection areas have been built to protect their living environment. People also plant more bamboo forests to provide enough food for them, and strict laws have been made to stop poaching. Now, the number of giant pandas is slowly increasing, and they are no longer in danger of dying out. 1. Where do most giant pandas live in China? A. In the deserts of Xinjiang. B. In the bamboo forests of Sichuan, Shaanxi and Gansu. C. In the wetlands of Jiangsu. D. In the mountains of Tibet. 2. How long do giant pandas spend eating bamboo every day? A. About 4 to 6 hours. B. About 8 to 10 hours. C. About 12 to 14 hours. D. About 16 to 18 hours. 3. Why do giant pandas spend much time resting? A. Because they are too lazy to move around. B. Because bamboo provides little nutrition for them. C. Because they are afraid of meeting other animals. D. Because their living environment is too cold. 4. What measures have been taken to protect giant pandas? A. Building nature parks, planting bamboo and making strict anti-poaching laws. B. Letting all pandas live in zoos to avoid danger. C. Encouraging people to feed pandas with other foods instead of bamboo. D. Cutting down some bamboo forests to make more living space for them. C篇 This month, our school held a “Green Campus” activity with the theme of “Protect the Environment, Start with Me”. The activity aimed to help students develop environmental protection awareness, form good living habits and make our school a cleaner, greener and more beautiful place. It lasted for four weeks and included many interesting and meaningful parts that attracted all teachers and students to take part in. First, we had a tree-planting day on the first Saturday of the month. With the help of gardeners, all classes planted more than 200 saplings around the playground, the school garden and the roadside. We also made name cards for each tree and took turns to water them regularly. Second, we set up standardized waste sorting stations in every classroom, the school cafeteria and the teaching building hall. Teachers taught us how to separate dry waste, wet waste, recyclable waste and harmful waste clearly, and we carried out a waste sorting competition to improve our practical ability. Third, there was an environmental speech contest held in the school hall. Many students signed up actively and shared their practical ideas on how to protect the environment in daily life, such as saving water and electricity, using reusable bags instead of plastic bags, reducing food waste and planting more green plants. Some students also showed pictures of environmental pollution to remind everyone of the importance of protecting the earth. At the end of the activity, the school awarded prizes to the classes and students who performed well in various activities. Through this “Green Campus” activity, everyone learned more professional knowledge about environmental protection and formed good living habits. Our school is now more beautiful, and we all deeply realize that protecting the earth is the responsibility of every student. 1. What is the theme of the “Green Campus” activity? A. “Study Hard, Improve Grades”. B. “Protect the Environment, Start with Me”. C. “Make Friends, Share Happiness”. D. “Keep Healthy, Do More Sports”. 2. Which activity is NOT mentioned in the passage? A. Tree-planting day with sapling care. B. Standardized waste sorting and competition. C. Environmental speech contest in the school hall. D. English debate competition about daily life. 3. What did students share in the environmental speech contest? A. Ways to improve English speaking skills. B. Ideas on environmental protection in daily life. C. Plans for the coming winter vacation. D. Experiences of making new friends at school. 4. What can we infer from the passage? A. Only a few students took part in the “Green Campus” activity. B. The “Green Campus” activity had a positive influence on students. C. The school didn’t pay attention to the activity’s results. D. Students knew everything about environmental protection before the activity. 四、七选五(共5小题,每小题2分,满分10分) 根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 Plants are an important part of the natural world and are closely connected to human life. 1._ They can take in carbon dioxide from the air and produce oxygen for us to breathe, which keeps the air fresh and clean. Besides, many plants can also help prevent soil erosion and protect our environment. Different plants grow in different environments. 2._ Some plants like cacti can live in dry deserts, while others like lotus flowers grow well in water. Wetland plants, such as reeds, are especially useful—they can clean wastewater and maintain the balance of wetland ecosystems. Plants are not only helpful to the environment but also important to our daily life. 3._ Many fruits and vegetables we eat every day come from plants, like apples, tomatoes and potatoes. Some plants can even be made into medicine to help us stay healthy. However, many plants are now in danger of disappearing. 4._ Cutting down too many trees, polluting the air and water, and destroying plant habitats all cause great harm to plants. If we lose too many plants, the ecosystem will be broken and our life will be affected. It’s everyone’s duty to protect plants. 5._ We can plant more trees and flowers in our yards or communities. We should also stop destroying plant habitats and reduce pollution. By protecting plants, we are protecting ourselves and the whole natural world. A. They provide us with food and other useful things. B. Some animals depend on plants for food and shelter. C. They play a key role in keeping the ecosystem balanced. D. Different environments give plants different living conditions. E. Human activities are the main reason for this problem. F. We should learn more about different kinds of plants around us. G. Plants can’t live without enough water and sunlight. 五、词汇检测(共10分) (A) 根据句意及汉语提示写出单词(每空1分,共5分) 1. The _(生态系统)of the forest is very important for animals and plants. 2. Wetlands can _(贮存)water and keep the air fresh. 3. Cutting down too many trees will _(损害)the environment greatly. 4. The red-crowned crane is a _(珍贵的)bird in China. 5. We should try our best to _(防止)people from polluting the rivers. (B) 用括号内所给单词的适当形式填空(每空1分,共5分) 1. _(sad), many rare animals are in danger of dying out. 2. Trees are like the _(lung)of the earth; we should protect them. 3. We need more _(knowledge)about environmental protection. 4. The factory stopped _(pollute)the river after the warning. 5. We should tell people the _(important)of protecting wetlands. 六、任务型阅读(共3小题,每小题2分,满分6分) 阅读下面短文,根据短文内容回答下列问题(每小题答案不超过10个单词)。 As we all know, the natural world is closely connected with our daily life and plays a key role in keeping the earth’s balance. However, it’s facing more and more serious problems these years due to human activities. Air pollution is one of the most worrying ones. Many factories release large amounts of harmful gases into the air, and the increasing number of cars also produces lots of waste gas. These make the air dirty and even cause smog in some cities. Breathing such bad air is harmful to our health, leading to respiratory problems, and it also stops plants from growing well and endangers some small animals. Water pollution is another major environmental problem. Some factories pour untreated wastewater directly into rivers, lakes and even oceans, which contains toxic chemicals. This not only kills fish, frogs and other aquatic life but also makes the water undrinkable for both humans and animals. Besides, people often throw plastic rubbish and other waste into the environment casually, which pollutes the soil, destroys animal habitats and breaks the natural ecosystem balance gradually. It’s everyone’s duty to take action to protect the natural world. We can start with small things in daily life: use reusable bags instead of plastic ones to reduce white pollution, save water by turning off taps in time and save electricity by turning off lights when leaving rooms. We can also join volunteer activities to clean up public areas and plant more trees to improve air quality. Every small action we take can make a big difference to protecting our planet and keeping the natural world healthy. 1. What’s one of the most worrying environmental problems? 2. What makes water undrinkable for humans? 3. How can we reduce white pollution? 七、书面表达(满分15分) 如今,环境保护已成为全球关注的焦点。作为中学生,我们可以从日常生活中的小事做起,为保护自然环境贡献自己的力量。请以“Protect the Natural World, Start with Small Things”为题,写一篇短文,谈谈我们能做些什么以及这样做的意义。 写作要求: 1. 词数80-100词; 2. 内容完整,逻辑清晰,语句通顺; 3. 文中不得出现真实姓名和学校名称。 答案: 一、单项选择 1. A 2. C 3. C 4. A 5. A 6. A 7. C 8. B 9. B 10. A 11. A 12. B 13. A 14. A 15. A 二、完形填空 1. A 2. B 3. C 4. B 5. B 6. A 7. C 8. B 9. B 10. A 11. A 12. B 13. A 14. C 15. C 三、阅读理解 A篇 1. B 2. C 3. C 4. A B篇 1. B 2. C 3. B 4. A C篇 1. B 2. D 3. B 4. B 四、七选五 1. C 2. D 3. A 4. E 5. F 五、词汇检测 (A) 根据句意及汉语提示写出单词 1. ecosystem 2. store 3. harm 4. rare 5. prevent (B) 用括号内所给单词的适当形式填空 1. Sadly 2. lungs 3. knowledge 4. polluting 5. importance 六、任务型阅读 1. Air pollution. 2. Untreated wastewater with toxic chemicals. 3. Use reusable bags instead of plastic ones. 七、略(答案不唯一) 学科网(北京)股份有限公司 $