Unit 7 The unknown world 练习题 2024-2025学年沪教牛津版八年级英语下册

Unit 7 The unknown world 练习题 一、单项选择（每小题2分，共20分） 1.--- It is said that aliens are living in a world that is undiscovered. --- That sounds fascinating! A. the far world B. the unknown world C. the dark world 2.--- Sara walked in fear, because she felt that someone was following her. --- That must have been scary! A. in need B. in surprise C. in horror 3.--- My mother is sleeping, so we should have a low voice. --- Sure, let's keep quiet. A. keep quiet B. feel relaxed C. hurry up 4.--- I wonder if you could give me a hand. --- Of course, what do you need? A. want to guess B. want to know C. want to believe 5.--- I suggested my family going somewhere on vacation, and they agreed with me. --- That's great! A. didn’t say anything B. had the same opinion with me C. said no to me 6.--- You will receive a warm welcome if you come to England. --- Thank you! A. get B. give C. bring 7.--- You should stay away from the snakes, because they are dangerous creatures. --- I will, they look scary. A. animals B. tools C. human beings 8.--- I have discovered the person who broke the window. --- Oh, really? Who is it? A. found B. seen C. watched 9.--- The thing in the bowl looks terrible, and I don't want to see it again. --- I can understand why. A. happy B. exciting C. unpleasant 10.--- Henry refused our invitation, because he was really busy. --- That's too bad. A. recorded B. couldn’t hold C. didn’t accept 二、完形填空（每小题2分，共20分） 阅读下面短文，从短文后所给的A、B、C、D四个选项中选出能填入相应空白处的最佳选项。 Over millions of years ago, there were deserts. Now about one fifth of the Earth’s surface _______ (11) deserts. The size of the world’s deserts is always _______ (12). Deserts can be hot or cold. The Australian Desert is a hot desert, while the Gobi Desert in Mongolia is an example of a cold desert. Deserts are dry areas _______ (13) less than 50 cm of rain falls each year. The Sahara Desert in Africa receives less than 1.5 cm a year. _______ (14) rain doesn’t fall very often in deserts, sometimes even for years, there can be heavy rain _______ (15). Because they are dry, deserts have wide changes in temperature each day. When the sun _______ (16) up, it is very hot. At night, the heat _______ (17) by the ground during the day _______ (18) disappears, and then it becomes very cold. Because _______ (19) the change, living in the desert is very difficult. Man can make deserts, but they can also stop them from getting larger and larger. Planting trees can prevent the sand from _______ (20). ( ) 11. A. is B. are C. was D. were ( ) 12. A. change B. changing C. changed D. changes ( ) 13. A. where B. when C. which D. that ( ) 14. A. Although B. Because C. Since D. When ( ) 15. A. suddenly B. slowly C. quickly D. gradually ( ) 16. A. goes B. went C. will go D. has gone ( ) 17. A. received B. accepted C. collected D. gathered ( ) 18. A. quickly B. slowly C. gradually D. immediately ( ) 19. A. of B. for C. with D. by ( ) 20. A. spreading B. spread C. to spread D. spreads 三、阅读理解（每小题2分，共20分） A We want to explore and try to better understand the world in which we live. Space exploration is one of the ways. Through the exploration of space, we can begin to unravel the mysteries of our universe, and to better know our living environment. Space exploration provides us with knowledge about the beginning of our solar system, our own planet, and ourselves. It also helps answer the questions that have puzzled us for many years. Solar system exploration is important because it is good for us. Space technology has become an important part of our daily lives. Some technology uses satellites to communicate. Satellites are also used to examine the changes in the Earth’s climate and seas, for weather reports, and for military purposes. We also use satellites in food production. Because of the use of space technology in crops, fewer and fewer people will suffer from hunger. The space program provides a chance for nations to work together. The cooperation promotes peace and understanding between governments and their people. Many governments have taken part in the space technology, including the United States, Russia, Japan, the European nations, and India. In the near future, other nations will take part in it. In fact, the United States remains the leader in new space technology. ( ) 31. The underlined word “unravel” in the first paragraph can be replaced by “________”. A. explain B. describe C. keep D. believe ( ) 32. What is the main idea of the second paragraph? A. Difficulties in space exploration. B. The advantages of space exploration. C. The answers to the questions of space exploration. D. What we can get from space and solar system. ( ) 33. The following are the uses of satellites EXCEPT __________. A. reporting the weather B. examining the changes of seas C. increasing the food production D. changing the climate of a certain place ( ) 34. Which country is the best in new space technology? A. The United States. B. Russia. C. Japan. D. India. ( ) 35. What can we know from the last paragraph? A. Poor countries don’t agree to explore space. B. People in different countries have different ideas on exploring space. C. More and more countries will take part in the space program. D. Many countries don’t want to work together with other countries. B Are you a big fan of E.T. (Extraterrestrial) or aliens? Then you should read Extraterrestrial Civilizations (《地球以外的文明世界》) by American writer Isaac Asimov (1920-1992). In his 1979 book, Asimov looked at whether there is life beyond the Earth. He also talked about how we might be able to communicate with aliens someday. Asimov even told us that there are possibly about 500,000 civilizations (文明) in the galaxy (银河系). The book may be a little out of fashion since it came out in the 70s. But you’ll still enjoy the good reasoning (推理) and imagination of it. Asimov was a science fiction (科幻故事) master. His most famous works talk about the relationship between robots and humankind. ( ) 36. Which of the following sentences best expresses the main idea? A. Asimov’s books are talking about the relationship between robots and humankind. B. Students are big fans of E.T. C. Some students enjoy the good reasoning and imagination. D. Asimov was a love of E.T. ( ) 37. Asimov was a ____. A. science fiction master B. writer of funny story C. actor D. dancer ( ) 38. Isaac Asimov comes from _____. A. England B. America C. China D. Japan ( ) 39. The writer indirectly expresses that there are possibly about 500,000 civilizations ______. A. in America B. in Australia C. European D. in the galaxy ( ) 40. The readers will enjoy the _____. A. good reasoning and imagination of it B. good imagination C. good expression D. good understanding 四、词汇（每小题2分，共10分） 根据句意，用括号内所给单词的适当形式填空。 41. He refused _________ (do) the housework. 42. She ________ (explain) the reason for being late. 43. The bird in the cage has beautiful _________ (feather). 44. We need several different _______ (knife) to make paper cutting. 45. I'm very pleased _______ (see) you. 46. I am very ________ (frighten) with snakes. Don't let me see them. 47. The plane landed on the _________ (land) site three hours ago. 48. There is something ________ (write) on this piece of paper. 49. Our teacher asked us not _________ (talk) to each other in class. 50. I heard a man _______ (speak) outside the house at that time, but I didn't know who he was. 五、语法知识填空（每小题2分，共10分） 根据语法和文章的上下文意思填入所缺单词。 Over millions of years ago, there were deserts. Now about one fifth of the Earth’s surface _______ (11) deserts. The size of the world’s deserts is always _______ (12). Deserts can be hot or cold. The Australian Desert is a hot desert, while the Gobi Desert in Mongolia is an example of a cold desert. Deserts are dry areas _______ (13) less than 50 cm of rain falls each year. The Sahara Desert in Africa receives less than 1.5 cm a year. _______ (14) rain doesn’t fall very often in deserts, sometimes even for years, there can be heavy rain _______ (15). Because they are dry, deserts have wide changes in temperature each day. When the sun _______ (16) up, it is very hot. At night, the heat _______ (17) by the ground during the day _______ (18) disappears, and then it becomes very cold. Because _______ (19) the change, living in the desert is very difficult. Man can make deserts, but they can also stop them from getting larger and larger. Planting trees can prevent the sand from _______ (20). 答案及解析 一、单项选择 1. B. the unknown world - "the unknown world" 表示“未知的世界”，符合语境。 2. C. in horror - "in horror" 表示“惊恐地”，符合语境。 3. A. keep quiet - "keep quiet" 表示“保持安静”，符合语境。 4. B. want to know - "want to know" 表示“想知道”，符合语境。 5. B. had the same opinion with me - "had the same opinion with me" 表示“和我有相同的看法”，符合语境。 6. A. get - "get" 表示“得到”，符合语境。 7. A. animals - "animals" 表示“动物”，符合语境。 8. A. found - "found" 表示“发现”，符合语境。 9. C. unpleasant - "unpleasant" 表示“不愉快的”，符合语境。 10. C. didn’t accept - "didn’t accept" 表示“不接受”，符合语境。 二、完形填空 11. A. is - "is" 用于一般现在时，表示“是”，符合语境。 12. B. changing - "changing" 表示“正在变化”，符合语境。 13. A. where - "where" 引导定语从句，表示“在……的地方”，符合语境。 14. A. Although - "Although" 表示“尽管”，符合语境。 15. A. suddenly - "suddenly" 表示“突然地”，符合语境。 16. A. goes - "goes up" 表示“升起”，符合语境。 17. A. received - "received" 表示“接收”，符合语境。 18. A. quickly - "quickly" 表示“快速地”，符合语境。 19. A. of - "Because of" 表示“因为”，符合语境。 20. A. spreading - "spreading" 表示“扩散”，符合语境。 三、阅读理解 A 31. A. explain - "explain" 表示“解释”，符合语境。 32. B. The advantages of space exploration. - 第二段主要讲述了太空探索的优势。 33. D. changing the climate of a certain place - 卫星的用途不包括改变某个地方的气候。 34. A. The United States. - 美国在新的太空技术方面处于领先地位。 35. C. More and more countries will take part in the space program. - 越来越多的国家将参与太空计划。 B 36. A. Asimov’s books are talking about the relationship between robots and humankind. - 这句话概括了Asimov书籍的主要内容。 37. A. science fiction master - Asimov是一位科幻大师。 38. B. America - Asimov来自美国。 39. D. in the galaxy - 作者间接表示银河系中可能有500,000个文明。 40. A. good reasoning and imagination of it - 读者会欣赏书中的推理和想象力。 四、词汇 41. to do - "refused to do" 表示“拒绝做某事”。 42. explained - "explained" 表示“解释”。 43. feathers - "feathers" 表示“羽毛”。 44. knives - "knives" 表示“刀”。 45. to see - "pleased to see" 表示“很高兴见到”。 46. frightened - "frightened" 表示“害怕的”。 47. landing - "landing site" 表示“着陆点”。 48. written - "something written" 表示“写的东西”。 49. to talk - "asked us not to talk" 表示“要求我们不要说话”。 50. speaking - "heard a man speaking" 表示“听到一个人在说话”。 五、语法知识填空 11. is - "is" 用于一般现在时，表示“是”。 12. changing - "changing" 表示“正在变化”。 13. where - "where" 引导定语从句，表示“在……的地方”。 14. Although - "Although" 表示“尽管”。 15. suddenly - "suddenly" 表示“突然地”。 16. goes - "goes up" 表示“升起”。 17. received - "received" 表示“接收”。 18. quickly - "quickly" 表示“快速地”。 19. of - "Because of" 表示“因为”。 20. spreading - "spreading" 表示“扩散”。 学科网（北京）股份有限公司 $$