Unit 4 Amazing Plants and Animals Section B (2a-2d) (同步练）2026-2027学年人教版八年级英语上册

**基本信息** 本练习以词汇巩固为起点，通过三层递进设计实现从单一语言知识到综合语用能力的提升，适配新授课夯实基础与初步培养语言能力、思维品质的需求。 **分层设计** |层次|知识覆盖|设计特色| |----|----------|----------| |基础层|核心词汇与基础词法|单词拼写巩固height等主题词，单选聚焦词性辨析（如joy/happiness/fun归类）| |进阶层|语篇衔接与交际应用|阅读还原（野兔生活）训练信息匹配，补全对话（蜜蜂重要性）提升交际逻辑| |综合层|语言综合运用|短文填空（青蛙生态）考查词形转换（connect→connection），阅读理解强化信息提取与推理|

Unit 4 Amazing Plants and Animals Section B (2a-2d) 一、根据首字母或句意提示写出单词 1. He is very tall. His h__________ is 1.85 metres. 2. The elephant’s w__________ is about 5,000 kilograms. 3. She felt great j__________ when she saw the beautiful flowers. 4. Don’t be a__________. Everything will be fine. 5. The sun a__________ from behind the clouds. 6. You can’t i__________ a world without plants and animals. 7. People use refrigerators to s__________ food. 8. This box w__________ ten kilograms. It’s very heavy. 9. Frogs play an important r__________ in the ecosystem. 10. We should p__________ the environment for our future. 二、单项选择 （ ）1. Which word is different from the others? A. habit B. height C. size D. weight （ ）2. Which word is different from the others? A. joy B. happiness C. fun D. enjoy （ ）3. Which word is different from the others? A. angry B. disappointed C. smart D. sad （ ）4. Which word is different from the others? A. appear B. look C. seem D. watch （ ）5. Which word is different from the others? A. honey B. milk C. juice D. bread （ ）6. The suffix “-ness” can be added to “good” to form the noun “______”. A. goodance B. goodtion C. goodness D. goodity （ ）7. The suffix “-tion” can be added to “act” to form the noun “______”. A. actance B. action C. actness D. actity （ ）8. I felt ______ when my favourite flowers died. A. happy B. disappointed C. excited D. interested （ ）9. After the rain, some mushrooms ______ in the garden. A. appeared B. disappeared C. stored D. weighed （ ）10. In my hometown, people often use bamboo baskets to ______ food. A. store B. eat C. cook D. grow 三、阅读还原 The Life of Wild Rabbits Wild rabbits are common in many places, but their lives are more interesting than you might think. They live in groups and build underground homes called warrens. 1. _______ These homes keep them safe from predators like foxes. In spring, mother rabbits give birth to baby rabbits. 2. _______ The mother leaves them in the warren while she looks for food, but she returns often to feed them. This is a busy time for her—she has to find enough grass and vegetables to eat. Rabbits have strong legs that help them jump far. 3. _______ When they sense danger, they hop away quickly. They also thump their hind legs on the ground to warn other rabbits, like saying “Be careful!” In my hometown, rabbits mean a lot to farmers. 4. _______ However, they sometimes eat crops, so farmers have to find ways to protect their plants without harming the rabbits. Scientists do studies on rabbits to learn how they adapt to different climates. 5. _______ It’s amazing to see how these small animals survive and play a role in nature. A.Baby rabbits are very small, about the size of a pea. B. They help by eating weeds, which keeps the fields clean. C. This way, they can live through cold winters and hot summers. D. These underground homes have many rooms connected by tunnels. E. They can jump as far as two meters, which helps them escape danger. 四、补全对话 A: Did you know that bees are very important for our planet? B: Really? 1. __________ A: Because they help plants grow through pollination. B: 2. __________ A: About 80 per cent of the plants in the world cannot grow without bees. B: That’s surprising! 3. __________ A: Unfortunately, the number of bees is dropping. B: 4. __________ A: We can plant more flowers and avoid using harmful chemicals. B: 5. __________ I’ll try to help. A: That’s great. Every little bit helps. A. That sounds like a good plan. B. Why are they so important? C. What can we do to help them? D. What is happening to them? E. How many plants cannot grow without bees? 五、短文填空 Frogs are amazing creatures that play _____________important role in our ecosystem. Many people know they help farmers by eating insects. But do you know more about their 1. _______________ (connect) with nature? First, let’s talk about their growth. After rain, mushrooms and some frogs 2. ______ (appear) in gardens. In some places, people use bamboo baskets to 3. _______________ (store) food, just like how frogs find safe spots to live. When we lose our 4. _______________ (favourite) plants or animals, we may feel 5. _______________ (disappoint). Frogs also face changes—their homes are sometimes destroyed. It’s hard to 6. _______________ (imagine) a world without these little helpers. Scientists study frogs to understand the 7. _______________ (important) of protecting our planet. Even a small action, like not polluting water, can 8. _______________ (act) as a way to save them. Let’s all do our part _____________(keep)frogs and nature in balance! 六、阅读理解 You may not realize it, but frogs play an important role in our planet’s ecosystem. The smallest frogs are about the size of a pea, while larger ones can grow as big as a human hand. Many people know that frogs help to protect farms by eating insects. However, not everyone understands their importance in nature. Frogs can live on land and in water. Because of this, they are popular subjects in studies on climate change and the ecosystem. Scientists study frogs to learn about the health of the environment. If frogs are in danger, it means the environment may also be in danger. （ ）1. What role do frogs play in the ecosystem? A.They eat plants.  B.They protect farms by eating insects.  C.They clean the water.  D. They make honey. （ ）2. How big can the largest frogs grow? A.The size of a pea.  B.The size of a human hand.  C.The size of a cat.  D. The size of a dog. （ ）3. Where can frogs live? A. Only on land. B. Only in water. C. On land and in water. D. Only in trees. （ ）4. Why do scientists study frogs? A.To learn about the health of the environment.  B.To catch them for food.  C.To sell them as pets.  D. To make medicine. （ ）5. If frogs are in danger, what does it mean? A.The environment is safe.  B.The environment may also be in danger.  C.People will have more food.  D. The weather will be better. 答案 一、根据首字母或句意提示写出单词 1. height 2. weight 3. joy 4. angry 5. appeared 6. imagine 7. store 8. weighs 9. role 10. protect 二、单项选择 1. A 2. D 3. C 4. D 5. D 6. C 7. B 8. B 9. A 10. A 三、阅读还原 1. D 2. A 3. E 4. B 5. C 四、补全对话 1. B 2. E 3. D 4. C 5. A 五、短文填空 1.connection 2.appear 3.store 4.favourite 5.disappointed 6.imagine 7.importance 8.act 六、阅读理解 1. B 2. B 3. C 4. A 5. B 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $