Unit 5 The power of plants Understanding ideas 课后作业2025-2026学年外研版七年级英语上册

Unit 5 The power of plants Understanding ideas 课后作业 一、语音辨别（共5分） 找出下列每组单词中划线部分发音不同的一项。 ( )1. A. cat B. bamboo C. apple D. water ( )2. A. herb B. term C. worker D. girl ( )3. A. power B. flower C. below D. how ( )4. A. useful B. universe C. unless D. university ( )5. A. grow B. slow C. down D. snow 二、根据句意及首字母补全单词（共10分） 1. The leaves of the plant can c_______ sunlight and turn it into food. 2. Plants r_______ water and nutrients from the soil through their roots. 3. It's amazing that some plants can live in very d_______ places like deserts. 4. The flower s_______ very sweet. Many bees are flying around it. 5. We should p_______ plants because they are important to our Earth. 6. The stem helps to c_______ water and food between the roots and leaves. 7. Some plants have special ways to p_______ themselves from animals. 8. The little boy is interested in the m_______ of how plants grow. 9. Without sunlight, most plants will d_______ soon. 10. The book tells us many interesting f_____ about plants around the world. 三、单项选择（共15分） ( )1. —How do plants get energy? —They get energy _______ sunlight, water and air. A. from B. with C. to D. for ( )2. The teacher asked us _____ more about the power of plants after class. A. learn B. to learn C. learning D. learned ( )3. _______ interesting the story about the bamboo is! A. What B. What a C. How D. How a ( )4. Plants are very important _______ they can produce oxygen for us to breathe. A. so B. because C. but D. or ( )5. —_______ do you water the flowers? —Twice a week. A. How long B. How soon C. How often D. How much ( )6. We _______ cut down too many trees, or it will be bad for the environment. A. needn't B. mustn't C. can't D. shuldn't ( )7. The little girl ____ a beautiful flower when she walked through the garden. A. picks B. picked C. is picking D. will pick ( )8. Bamboo is one of _______ plants in the world. A. useful B. more useful C. most useful D. the most useful ( )9. —Do you know _______? —Yes, they use sunlight to make food. A. how plants grow B. how do plants grow C. where plants grow D. where do plants grow ( )10. Look! The students _______ a project about plants in the classroom. A. discuss B. discussed C. are discussing D. will discuss 四、汉译英（共10分） 1. 植物用根从土壤中吸收水分和营养。 2. 有些植物能在寒冷的冬天存活下来。 3. 这篇文章告诉我们植物是如何获取能量的。 4. 我们应该尽最大努力保护地球上的植物。 5. 植物不仅为我们提供食物，还为动物提供家园。 五、语法填空（共15分） 阅读短文，在空白处填入一个适当的单词或用括号内所给词的正确形式填空。 Plants are one of the most important living things on Earth. They (1)_______ (be) around for millions of years. There are over 300,000 different kinds of plants. Some are small, like grass. Others are very tall, like trees. Plants have different parts that help them (2)_______ (live). The roots hold the plant in the soil. They also take in water and nutrients (3)_______ the soil. The stem carries water and nutrients from the roots to the leaves and flowers. The leaves are very important because they make food (4)_______ the plant. They use sunlight, water and carbon dioxide (5)_______ (make) food. This process (6)_______ (call) photosynthesis (光合作用). Plants are very useful to humans. We eat many parts of plants, such (7)_______ fruits, vegetables and grains. We use wood (8)_______ (make) houses, furniture and paper. Some plants can be used (9)_______ (make) medicine. Plants also help keep the air clean. They take in carbon dioxide and produce oxygen. It's important (10)_______ (protect) plants. We should plant more trees and stop (11)_______ (cut) down forests. We should also stop (12)_______ (pollute) the environment. If we do these things, plants will continue (13)_______ (help) us and our Earth will be (14)_______ (beautiful) than before. Let's work together to protect (15)_______ (they). 六、阅读理解（共20分） 阅读短文，从每题所给的A、B、C、D四个选项中选出最佳选项。 Passage 1 Plants are amazing. They can live in almost every place on Earth. Some plants live in the cold Arctic. Some live in hot deserts. Others live in the deep ocean. Plants have many special ways to survive. For example, cacti (仙人掌) live in deserts. They have thick stems to store water. Their leaves are sharp spines (刺) to stop animals from eating them. Another example is the water lily (睡莲). It lives in water. Its roots are in the mud at the bottom of the lake. Its leaves and flowers float on the water. They can get enough sunlight. Plants are also very important for animals. Many animals eat plants. Other animals eat the animals that eat plants. So plants are the beginning of the food chain (食物链). Without plants, many animals would die. ( )1. Where can plants live according to the passage? A. Only in cold places. B. Only in hot places. C. In almost every place on Earth. D. Only in the ocean. ( )2. What do cacti use to store water? A. Their roots. B. Their thick stems. C. Their leaves. D. Their flowers. ( )3. Why do cacti have sharp spines? A. To store water. B. To get sunlight. B. C. To stop animals from eating them. D. To take in nutrients. ( )4. Where are the roots of the water lily? A. In the mud at the bottom of the lake. B. On the water. C. In the desert. D. In the Arctic. ( )5. What is the beginning of the food chain? A. Animals. B. Plants. C. Water. D. Sunlight. Passage 2 Have you ever heard of the Venus flytrap (捕蝇草)? It is a very special plant. It is different from other plants because it can eat insects (昆虫). The Venus flytrap has leaves that look like little traps. Each trap has two parts. There are small hairs on the inside of the trap. When an insect touches the hairs twice in a short time, the trap closes quickly. It takes less than a second! The insect can't get out. Then the plant uses special juices to break down the insect. It takes the plant about 10 days to finish eating the insect. After that, the trap opens again and waits for the next insect. Why does the Venus flytrap eat insects? It lives in soil that doesn't have many nutrients. So it needs to get nutrients from insects to grow strong. The Venus flytrap is a very interesting plant. But it is also in danger. People are cutting down the forests where it lives. We should protect it. ( )6. What is special about the Venus flytrap? A. It can fly. B. It can eat insects. C. It can talk. D. It can move. ( )7. What do the leaves of the Venus flytrap look like? A. Little traps. B. Little hairs. C. Little insects. D. Little flowers. ( )8. When does the trap of the Venus flytrap close? A.When it rains. B. When the sun comes out. C. When an insect touches the hairs twice in a short time. D. When people touch it. ( )9. How long does it take the Venus flytrap to finish eating an insect? A. Less than a second. B. About 10 days. C. About 10 hours. D. About 10 minutes. ( )10. Why does the Venus flytrap eat insects? A. Because it likes the taste of insects. B. Because it lives in soil with few nutrients. C. Because it is a kind of insect-eating animal. D. Because it wants to play with insects. 七、任务型阅读（共15分） 阅读短文，然后根据内容回答问题。 Plants are very important to us. They provide us with food, oxygen, and many other things. But do you know how plants grow? Let's find out. First, a seed needs the right conditions to grow. It needs sunlight, water, and warm soil. When a seed gets these things, it starts to grow. First, a small root comes out of the seed. The root goes down into the soil to get water and nutrients. Then, a small stem comes up. The stem grows towards the sunlight. Next, leaves start to grow on the stem. The leaves are very important. They use sunlight, water, and carbon dioxide to make food for the plant. This process is called photosynthesis. As the plant grows, it may grow flowers. The flowers make seeds. When the seeds fall to the ground, a new plant may grow. This is the life cycle of a plant. Plants are amazing. They can grow in many different places. Some plants grow very fast, like bamboo. Some plants can live for a very long time, like some trees. We should learn more about plants and protect them. 1. What does a seed need to grow? 2. What comes out of the seed first? 3. What do the leaves use to make food for the plant? 4. What is the process of making food for the plant called? 5. What do the flowers of the plant make? 参考答案: 一、语音辨别 1. D 2. C 3. C 4. C 5. C 二、根据句意及首字母补全单词 1. catch 2. take 3. dry 4. smells 5. protect 2. carry 7. protect 8. mystery 9. die 10. facts 三、单项选择 1. A 2. B 3. C 4. B 5. C 2. D 7. B 8. D 9. A 10. C 四、汉译英 1. Plants use their roots to take in water and nutrients from the soil. 2. Some plants can survive in the cold winter. 3. This passage tells us how plants get energy. 4. We should try our best to protect the plants on Earth. 5. Plants not only provide us with food but also provide homes for animals. 五、语法填空 1. have been 2. (to) live 3. from 4. for 5. to make 2. is called 7. as 8. to make 9. to make 10. to protect 3. cutting 12. polluting 13. to help 14. more beautiful 15. them 六、阅读理解 Passage 1 1. C 2. B 3. C 4. A 5. B Passage 2 6. B 7. A 8. C 9. B 10. B 七、任务型阅读 1. It needs sunlight, water, and warm soil. 2. A small root comes out of the seed first. 3. They use sunlight, water, and carbon dioxide to make food for the plant. 4. It is called photosynthesis. 5. The flowers make seeds. 学科网（北京）股份有限公司 $