Unit 5 The power of plants Developing 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 Developing ideas 课后作业 班级：________ 姓名：________ 得分：________ 一、语音辨别 根据划线部分的发音将单词归类（有两个单词为干扰项）： plant、herb、term、water、flower、serve、paper、nervous、garden、silent 1. /ɜː/：________________ 2. /ə/：________________ 二、根据句意及首字母补全单词 1. Plants can produce oxygen, which is necessary for all living things to b____. 2. Many m_______ are made from plant extracts, helping people treat illnesses. 3. The farmer grows different kinds of v___ in his field, such as tomatoes and carrots. 4. We should p_______ plants instead of cutting down trees randomly. 5. Some plants have special s_______ that can keep insects away. 6. The p_______ of plants is amazing—they can turn sunlight into food. 7. In autumn, many plant leaves change color and f_______ to the ground. 8. This kind of flower can only grow in warm and w_______ soil. 三、单项选择 ( ) 1. Plants _______ water and sunlight to grow well. A. need B. needed C. needs D. needing ( ) 2. —How do plants help the environment? —They _______ harmful gases and produce oxygen. A. take in B. take off C. take out D. take away ( ) 3. Many rare plants _______ now because of human activities. A. die out B. die of C. die from D. die for ( ) 4. It’s important _______ us to learn about the power of plants. A. to B. for C. with D. of ( ) 5. The leaves of this plant _______ green all year round. A. stay B. stays C. stayed D. staying 四、汉译英 1. 植物在我们的日常生活中扮演着重要角色。 2. 如果我们不保护植物，生态系统将会受到破坏。 3. 有些植物可以在沙漠中生长，因为它们能储存水分。 4. 植物不仅能美化环境，还能净化空气。 5. 更重要的是，植物为许多动物提供了食物和栖息地。 五、语法填空 Plants are amazing living things. They (1)_______(exist) on Earth for millions of years. Plants use sunlight, water and carbon dioxide to make food for (2)_______(they) through photosynthesis(光合作用). This process not only feeds plants but also provides oxygen for animals and humans (3)_______(breathe). Some plants can grow in extreme environments. For example, cacti(仙人掌) can live in deserts where there is little rain. They store water in their thick stems. Other plants, like bamboo, grow very fast. Some bamboo (4)_______(grow) up to 1 meter a day! Plants are also very useful to humans. We get food, clothing, medicine and many other things from plants. (5)_______(protect) plants is protecting ourselves. We should stop (6)_______(cut) down trees and plant more plants. Let’s work together to create a greener world with plants. 六、阅读理解 Plants are more powerful than we think. They can communicate with each other and even protect themselves from danger. When a plant is attacked by insects, it will produce a special chemical. This chemical can warn nearby plants of the danger. Then the nearby plants will make their leaves taste bad, so insects won’t eat them. Some plants can also attract insects that eat the harmful bugs. For example, when a tomato plant is attacked by caterpillars(毛毛虫), it will release a chemical that draws wasps(黄蜂). The wasps will then lay eggs on the caterpillars, and when the eggs hatch, the baby wasps will eat the caterpillars. Plants also play an important role in fighting climate change. They take in carbon dioxide, a harmful greenhouse gas, and release oxygen. Forests are like the “lungs of the Earth” because they absorb a lot of carbon dioxide every year. Without plants, the Earth would be too hot for us to live on. We should respect plants and protect them. They are not just silent organisms—they are our great helpers in keeping the Earth healthy. 根据短文内容，选择最佳答案： ( ) 1. What will a plant do when it is attacked by insects? A. It will die quickly. B. It will produce a special chemical. C. It will stop growing. D. It will attract birds to eat the insects. ( ) 2. Why do nearby plants make their leaves taste bad? A. To warn other plants. B. To attract wasps. C. To stop insects from eating them. D. To store more water. ( ) 3. How do plants help fight climate change? A. By producing greenhouse gases. B. By absorbing carbon dioxide. C. By releasing harmful chemicals. D. By growing quickly. ( ) 4. What does the underlined word “lungs” mean in Chinese? A. 心脏 B. 肝脏 C. 肺 D. 肾脏 ( ) 5. What is the main idea of the passage? A. How plants communicate with each other. B. The importance of plants in fighting climate change. C. The amazing powers of plants and their roles. D. How to protect plants from insects. 七、任务型阅读 阅读短文，回答下列问题。 Plants are essential for life on Earth. They provide us with food, oxygen, medicine and materials. Different plants have different uses. Rice is one of the most important food crops in the world. It feeds billions of people every day. Wheat is another important food plant. It is used to make bread, noodles and other food. Many plants are used in medicine. For example, mint(薄荷) can help with stomachaches. Ginseng(人参) is famous for its health benefits. It can improve people’s energy and immunity. Plants also give us materials. Cotton is used to make clothes. Wood from trees is used to build houses and make furniture. Even paper is made from plants like bamboo and pine trees. We can’t live without plants. So it’s our duty to protect them. We can plant more trees, save water for plants and avoid picking flowers randomly. 1. What do plants provide us with? 2. Which food crops are mentioned in the passage? 3. What can mint help with? 4. What is wood used for? 5. What can we do to protect plants? 参考答案: 一、语音辨别 1. /ɜː/：herb、term、serve、nervous 2. /ə/：water、flower、paper、garden 干扰项：plant、silent 二、根据句意及首字母补全单词 1. breathe 2. medicines 3. vegetables 4. protect 5. smells 6. power 7. fall 8. wet 三、单项选择 1. A 2. A 3. A 4. B 5. A 四、汉译英 1. Plants play an important role in our daily life. 2. If we don’t protect plants, the ecosystem will be destroyed. 3. Some plants can grow in deserts because they can store water. 4. Plants can not only beautify the environment but also purify the air. 5. What’s more, plants provide food and habitats for many animals. 五、语法填空 1. have existed 2. themselves 3. to breathe 4. grows 5. Protecting 6. cutting 六、阅读理解 1. B 2. C 3. B 4. C 5. C 七、任务型阅读 1. They provide us with food, oxygen, medicine and materials. 2. Rice and wheat are mentioned. 3. It can help with stomachaches. 4. It is used to build houses and make furniture. 5. We can plant more trees, save water for plants and avoid picking flowers randomly. 学科网（北京）股份有限公司 $