Unit 4 Amazing Plants and Animals Section B (3a-3c) (同步练）2026-2027学年人教版八年级英语上册

**基本信息** 初中英语新授课同步练，以“词汇—句型—语篇”分层递进设计，强化语言能力与思维品质，实现基础巩固与综合应用衔接。 **分层设计** |层次|知识覆盖|设计特色| |----|----------|----------| |基础层|核心词汇记忆与辨析|含首字母填空（10题）、二选一词形辨析（10题），聚焦“largest/tiniest”等单元核心词| |巩固层|基础语法与情境应用|设单项选择（10题）、补全对话（5题），考查形容词最高级、介词等语法点在对话中的运用| |综合层|语篇理解与综合表达|通过完形填空（10题）、短文填空（10题）、阅读理解（5题），训练语篇逻辑分析与信息提取能力|

Unit 4 Amazing Plants and Animals Section B (3a-3c) 一、根据首字母或句意提示写出单词 1. The blue whale is the l__________ and h__________ animal on earth. 2. It can w__________ as much as 200 tons. 3. Blue whales live in all oceans e__________ the Arctic Ocean. 4. They eat some of the t__________ animals in the ocean. 5. A blue whale can eat around four t__________ of these a day. 6. Blue whales can live u__________ to 90 years. 7. When a blue whale d__________ at sea, it becomes food for many animals. 8. This food l__________ for over a year. 9. It helps to create a l__________ and healthy ecosystem. 10. Blue whales play an important r__________ in our world, so we must protect them. 二、单项选择 （ ）1. The blue whale is the ______ animal on earth. A. large B. larger C. largest D. the largest （ ）2. A blue whale can weigh as much as ______ tons. A. 20 B. 200 C. 2,000 D. 20,000 （ ）3. Blue whales live in all oceans ______ the Arctic Ocean. A. except B. besides C. including D. with （ ）4. Blue whales eat some of the ______ animals in the ocean. A. largest B. tiniest C. heaviest D. fastest （ ）5. A blue whale can eat around ______ tons of food a day. A. two B. three C. four D. five （ ）6. Blue whales can live up to ______ years. A. 50 B. 70 C. 80 D. 90 （ ）7. When a blue whale dies at sea, it becomes ______ for many animals. A. water B. food C. home D. shelter （ ）8. The food from a dead whale lasts for over ______. A. a month B. half a year C. a year D. two years （ ）9. Blue whales help to create a lively and ______ ecosystem. A. sick B. weak C. healthy D. dangerous （ ）10. Many people think watching blue whales swim is one of the most ______ things to see. A. boring B. beautiful C. scary D. strange 三、完形填空 The Little Helpers in Gardens In my hometown, there’s a small garden full of life. Many creatures live here and 1.________ an important role in keeping it beautiful. Every summer, mushrooms 2.________ in the garden after rain. They look like little umbrellas and mean a lot to the soil—they help make it rich. Kids love to find them, but some are poisonous, so adults always 3.________ them not to touch. Frogs also live here. They are not 4.________ a human hand, but they are great helpers. They keep pests away 5.________ eating insects. This makes the garden safe for flowers to grow. Once, I put a small frog in my bag by accident. When I checked my 6.________ later, it jumped out! My mom wasn’t angry—she said frogs 7.________ to our garden’s health. Scientists do 8.________ on these creatures. They say climate change may 9.________ them. It’s sad to think we might lose such helpful friends. Let’s all try to protect them, so future kids can also feel the 10 .________of seeing them in the garden. 1.A. play B. take C. make D. find 2.A. disappear B. appear C. sleep D. work 3.A. add B. use C. tell D. disappoint 4.A. as big as B. as small as C. as heavy as D. as long as 5.A. with B. by C. in D. on 6.A. luggage B. garden C. hometown D. study 7.A. mean a lot B. add a lot C. use a lot D. play a lot 8.A. roles B. studies C. climates D. peas 9.A. help B. protect C. disappoint D. harm 10.A. sadness B. happiness C. anger D. kindness 四、选词填空（二选一） 1. The blue whale is the __________ (largest / tallest) animal on earth. 2. A blue whale can weigh as much as 200 __________ (tons / kilograms). 3. Blue whales live in all oceans __________ (except / besides) the Arctic Ocean. 4. They eat some of the __________ (tiniest / largest) animals in the ocean. 5. A blue whale can eat around four __________ (tons / kilograms) of food a day. 6. Blue whales can live __________ (up to / down to) 90 years. 7. When a blue whale dies, it becomes __________ (food / water) for many animals. 8. This food __________ (lasts / stops) for over a year. 9. It helps to create a lively and __________ (healthy / unhealthy) ecosystem. 10. Blue whales play an important __________ (role / game) in our world. 五、短文填空 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。 The blue whale is the largest and heaviest animal on Earth. It can weigh as much as 200 tons, making it 1. ____ (big) than any other animal. Many people enjoy watching blue whales swim, 2. ____ they think it is one of the most beautiful things to see. Blue whales live in all oceans 3. ____ the Arctic Ocean. Their main food is some of the tiniest sea animals, which 4. ____ (call) krill. A blue whale eats around four tons of these 5. ____ day. Blue whales can live 6. ____ to 90 years. When a blue whale dies at sea, its body becomes food for many sea creatures, 7. ____ (help) create a lively ecosystem. However, blue whales 8. ____ (face) dangers now, like pollution and ship collisions. We must protect them. By cutting down ocean pollution, we can let blue whales 9. ____ (continue) their lives. After all, they are important 10. ____ our ocean’s health. 六、补全对话 A: Look at this picture. 1. __________ B: Yes, it is. The blue whale is the largest and heaviest animal on earth. A: 2. __________ B: It can weigh as much as 200 tons. A: That’s amazing! 3. __________ B: Blue whales eat some of the tiniest animals in the ocean. A: 4. __________ B: A blue whale can eat around four tons of food a day. A: 5. __________ B: They can live up to 90 years. A. What do they eat? B. How long can they live? C. How much can they weigh? D. Is that a blue whale? E. How much do they eat a day? 七、阅读理解 The blue whale is the largest and heaviest animal on earth. It can weigh as much as 200 tons. Many people like watching blue whales swim, and they think it is one of the most beautiful things to see. Blue whales live in all oceans except the Arctic Ocean. They eat a lot, but they eat some of the tiniest animals in the ocean. A blue whale can eat around four tons of these a day. Blue whales can live up to 90 years. When a blue whale dies at sea, it becomes food for many kinds of animals living in and around the sea. This food lasts for over a year and it helps to create a lively and healthy ecosystem. Blue whales play an important role in our world, so we must protect them. （ ）1. How much can a blue whale weigh? A. Up to 90 tons. B. Up to 200 tons. C. Up to 4 tons. D. Up to 500 tons. （ ）2. Where do blue whales live? A. In all oceans. B. In all oceans except the Arctic Ocean. C. Only in the Atlantic Ocean. D. Only in the Pacific Ocean. （ ）3. What do blue whales eat? A. Large fish. B. Some of the tiniest animals in the ocean. C. Seaweed. D. Small whales. （ ）4. How long can blue whales live? A. Up to 50 years. B. Up to 70 years. C. Up to 80 years. D. Up to 90 years. （ ）5. Why do we need to protect blue whales? A. Because they are beautiful. B. Because they are the largest animals. C. Because they play an important role in the ecosystem. D. Because they are easy to catch. 答案 一、根据首字母或句意提示写出单词 1. largest, heaviest 2. weigh 3. except 4. tiniest 5. tons 6. up 7. dies 8. lasts 9. lively 10. role 二、单项选择 1. C 2. B 3. A 4. B 5. C 6. D 7. B 8. C 9. C 10. B 三、完形填空 1.A 2. B 3. C 4. A 5. B 6. A 7. A 8. B 9. D 10. B 四、选词填空 1. largest 2. tons 3. except 4. tiniest 5. tons 6. up to 7. food 8. lasts 9. healthy 10. role 五、短文填空 1．bigger 2．and 3．except 4．are called 5．a 6．up 7．helping 8．are facing 9．continue 10．To 六、补全对话 1. D 2. C 3. A 4. E 5. B 七、阅读理解 1. B 2. B 3. B 4. D 5. C 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 $