Unit 4 The Wonders of Nature Section B(2a-2c) (同步练） 2025-2026学年人教版英语八年级下册

Unit 4 The Wonders of Nature Why do we explore nature? Section B(2a-2c) 一、根据首字母或句意提示写出单词 1. Lake Baikal is the d__________ freshwater lake in the world. 2. To reach the bottom, you must dive 1,620 m__________. 3. Its surface covers 31,500 square k__________. 4. Lake Baikal is very cold for most of the y__________. 5. Over 1,200 different types of animals can still s__________ in this environment. 二、用单词的正确形式填空 1. Lake Baikal is one of the world's most __________ (fame) lakes. 2. It is the __________ (deep) freshwater lake in the world. 3. Its surface __________ (cover) 31,500 square kilometres. 4. Over 1,200 different types of animals can still survive in this __________ (environ). 5. Today, the lake still __________ (attract) many curious travellers. 三、单项选择题 ( ) 1. Lake Baikal is located ______ Siberia, Russia. A. on  B. in  C. at ( ) 2. It is one of the world's most ______ lakes. A. famous  B. more famous  C. most famous ( ) 3. It is the deepest freshwater lake ______ the world. A. on  B. in  C. at ( ) 4. To reach the bottom, you must dive 1,620 ______. A. metre  B. metres  C. meter ( ) 5. Its surface covers 31,500 square ______. A. kilometre  B. kilometres  C. kilometer ( ) 6. That is bigger than the country ______ Belgium. A. of  B. in  C. at ( ) 7. Lake Baikal is very cold for most ______ the year. A. in  B. of  C. at ( ) 8. Over 1,200 different types ______ animals can still survive here. A. in  B. of  C. for ( ) 9. Today, the lake still ______ many curious travellers. A. attract  B. attracts  C. attracting ( ) 10. It is a great natural ______. A. wonder  B. wonderful  C. wonderfully 四、选词填空（二选一） 1. Lake Baikal is the __________ (deep / deeper) freshwater lake in the world. 2. To reach the bottom, you must dive 1,620 __________ (metre / metres). 3. Its surface covers 31,500 square __________ (kilometre / kilometres). 4. Over 1,200 different types of animals can still __________ (survive / alive) in this environment. 5. Today, the lake still attracts many __________ (curious / curiosity) travellers. 五、根据汉语意思完成句子 1. 贝加尔湖位于俄罗斯的西伯利亚。 Lake Baikal is __________ in Siberia, __________. 2. 它是世界上最深的淡水湖。 It is the __________ freshwater lake in the __________. 3. 要到达湖底，你必须下潜1620米。 To reach the __________, you must __________ 1,620 metres. 4. 它的表面积达31,500平方公里。 Its __________ covers 31,500 square __________. 5. 今天，这个湖仍然吸引着许多好奇的游客。 Today, the lake still __________ many __________ travellers. 六、语法填空 阅读下面短文，在空白处填入一个适当的词，或使用括号内所给单词的正确形式填空。 Located in Siberia, Russia, Lake Baikal is one of the world's 1.__________ (famous) lakes. It is the 2.__________ (deep) freshwater lake in the world. To reach the bottom, you must dive 1,620 metres! It is also larger than most 3.__________ (other) lakes. Its surface covers 31,500 square kilometres. That is 4.__________ (big) than the country of Belgium! Lake Baikal is very cold for most of the year. But over 1,200 different types of animals can still 5.__________ (survival) in this environment. Some of these animals 6.__________ (be) found nowhere else on Earth. The water in Lake Baikal is very 7.__________ (clear). You can see far into its depths. It is also one of the 8.__________ (old) lakes in the world, at over 25 million years old. Today, the lake still attracts many curious 9.__________ (travel). They come to see its beauty and learn about its unique ecosystem. After all, it is a great natural 10.__________ (wonderful)! 七、补全对话 根据对话内容，从方框中选择恰当的句子补全对话，其中有一项多余。 A: Have you ever heard of Lake Baikal? B: 1.__________ It's in Russia, right? A: Yes, it's located in Siberia. Do you know how deep it is? B: 2.__________ A: It's the deepest freshwater lake in the world. You have to dive 1,620 metres to reach the bottom. B: 3.__________ A: Its surface covers 31,500 square kilometres. That's bigger than Belgium! B: 4.__________ A: Yes, over 1,200 different types of animals live there. B: 5.__________ I'd love to visit it someday. A. That's amazing! B. Wow, that's really deep! C. Yes, I have. D. How big is it? E. No, I haven't. F. Are there many animals there? 八、阅读理解 阅读下面短文，从每题所给的A、B、C三个选项中选出最佳选项。 Lake Baikal is one of the most amazing places on Earth. Located in Siberia, Russia, it is the deepest freshwater lake in the world. To reach the bottom, you would have to dive 1,620 metres! That's deeper than any other lake. Lake Baikal is also very large. Its surface covers 31,500 square kilometres. That is bigger than the country of Belgium. It contains about 20% of the world's fresh water. The lake is home to many unique animals. Over 1,200 different types of animals live there, and many of them are found nowhere else on Earth. One famous animal is the Baikal seal, the only freshwater seal in the world. Lake Baikal is very cold for most of the year. In winter, the surface freezes, and the ice can be over a metre thick. But even in the cold, life continues under the ice. People from all over the world visit Lake Baikal to see its beauty. They enjoy hiking, camping, and boat trips. Some even dive into its clear waters to explore the depths. Lake Baikal is truly a natural wonder. ( ) 1. Where is Lake Baikal located? A. In Belgium.  B. In Siberia, Russia.  C. In China. ( ) 2. How deep is Lake Baikal? A. 1,620 metres.  B. 31,500 metres.  C. 1,200 metres. ( ) 3. How much of the world's fresh water does Lake Baikal contain? A. About 10%.  B. About 20%.  C. About 50%. ( ) 4. What is special about the Baikal seal? A. It is the largest seal in the world. B. It is the only freshwater seal in the world. C. It can only be found in summer. ( ) 5. What can visitors do at Lake Baikal? A. Swim in warm water.   B. Hike, camp, and take boat trips.   C. See deserts and mountains. 参考答案 一、首字母或句意提示 1. deepest 2. metres 3. kilometres 4. year 5. survive 二、单词正确形式填空 1. famous 2. deepest 3. covers 4. environment 5. attracts 三、单项选择题 1. B 2. A 3. B 4. B 5. B 6. A 7. B 8. B 9. B 10. A 四、选词填空 1. deepest 2. metres 3. kilometres 4. survive 5. curious 五、完成句子 1. located, Russia 2. deepest, world 3. bottom, dive 4. surface, kilometres 5. attracts, curious 六、语法填空 1. most famous 2. deepest 3. other 4. bigger 5. survive 6. are 7. clear 8. oldest 9. travelers 10. wonder 七、补全对话 1. C 2. B 3. D 4. F 5. A 八、阅读理解 1. B 2. A 3. B 4. B 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 $