Unit 7 Section B 3a-self check同步练习 2024-2025学年人教版八年级英语下册

人教版八年级下册 UNIT 7 Section B 3a-self check 练习 基础巩固 一、词汇运用 根据句意及首字母或汉语提示完成单词。 1. The blue whale is the largest a______ in the world. 2. We should take action to p______ the environment. 3. Some kinds of whales have t______. 4. The p______ of whales is becoming more and more serious. 5. We should stop putting r______ into the sea. 二、单项选择 1. Elephants are ______ than pandas. A. heavy B. much heavy C. much heavier D. more heavier 2. This room is ______ than that one. A. big B. more big C. much bigger D. biggest 3. Tigers are one of ______ animals in the world. A. dangerous B. more dangerous C. most dangerous D. the most dangerous 4. —______ do you know about whales? —They live in the sea and some kinds have teeth. A. What B. Where C. Why D. How 5. We should protect wild animals ______ danger. A. in B. on C. from D. at 能力提升 三、阅读理解 阅读短文，判断正（T）误（F）。 Whales are very big animals. They live in the sea. Some kinds of whales are very long. They can be more than 30 meters long. Whales eat small fish and other sea life. Some whales have teeth and some don't. Whales can jump high out of the water. One interesting fact is that whales can sing songs. Another interesting fact is that whales can stay under water for a long time. Some kinds of whales are in danger because humans catch them for meat, fat and oil. We should protect whales. We should stop putting rubbish into the sea. We should make rules on whale protection. 1. Whales are the biggest animals in the world. （ ） 2. All kinds of whales have teeth. （ ） 3. Whales can't stay under water for a long time. （ ） 4. Some kinds of whales are in danger because of humans. （ ） 5. We should protect whales. （ ） 四、书面表达 假设你是李华，你的朋友 Tom 对鲸鱼很感兴趣，请你根据本单元所学内容，给他写一封邮件介绍鲸鱼，并说明保护鲸鱼的重要性。邮件不少于 80 词。 答 案 一、 1. animal 2. protect 3. teeth 4. problem 5. rubbish 二、 1. C 解析：than 是比较级的标志，heavy 的比较级是 heavier，much 可以修饰比较级，故选 C。 2. C 解析：than 是比较级的标志，big 的比较级是 bigger，much 可以修饰比较级，故选 C。 3. D 解析：“one of + the + 形容词最高级 + 名词复数”表示“最......之一”，dangerous 的最高级是 the most dangerous，故选 D。 4. A 解析：根据答语可知是询问关于鲸鱼的情况，用 what，故选 A。 5. C 解析：protect...from...表示“保护......免受......”，故选 C。 三、 1. F 解析：蓝鲸是世界上最大的动物，但不能说鲸鱼是世界上最大的动物，表述太绝对，错误。 2. F 解析：文中提到有些鲸鱼有牙齿，有些没有，不是所有鲸鱼都有牙齿，错误。 3. F 解析：文中提到鲸鱼可以在水下待很长时间，错误。 4. T 解析：文中提到有些鲸鱼处于危险中是因为人类的捕捞，正确。 5. T 解析：文中提到我们应该保护鲸鱼，正确。 四、 Dear Tom, How are you? I know you are interested in whales. Let me tell you something about them. Whales are huge animals. They live in the sea. They eat small fish and other sea life. Some kinds of whales have teeth and some don't. They can jump high out of the water. One interesting fact is that whales can sing songs. However, some kinds of whales are in danger. Humans catch whales for meat, fat and oil. Water pollution is also a big problem for them. We should protect whales. We should stop putting rubbish into the sea. We should make rules on whale protection. I think it's very important for us to protect whales. They are our friends. Best wishes! Li Hua 学科网（北京）股份有限公司 $$