西安交通大学网络学院新版大学英语四-答案.doc

公共课程系列—— 《大学英语四》 作业集 西安交通大学网络教育学院 刘仙泉 编 Unit 1 Education I. Communicative English （Choose the best Answer） 1. B 2. A 3. A 4. A 5. C II. Vocabulary and structure 6.D 7. C 8. B 9. C 10. A III. Cloze 11. A 12. B 13. A 14. B 15. D 16. C 17. B 18. D 19. D 20. A IV. Reading Comprehension Passage 1 21-25. B D A D B Passage 2 Oil is so important that it is sometimes called black gold. Almost half of our energy comes from oil. We use it to run our cars and factories and to heat our homes, offices and schools. Many everyday things are made from oil. Your shirt may have oil in the material. The soap you wash your hands with might also be made from oil. Your favorite plastic toy is made from oil. Oil is hard to find, because it is trapped deep under the earth. Once the only way people knew there was oil someplace if it leaked out of the ground. Today, however, we have many ways of finding oil. One tool measures the pull of gravity. Places where gravity is weaker are more likely to have oil. Another tool is sound waves. Sound waves travel through different kinds of rocks at different speeds. We can use them to find the rocks that have oil in them. We need a lot of oil, and we are using up the oil wells we know about. Soon we must find new ways of looking for this black gold. 26-30. B A C B D V.Translation 31. 很多的能源浪费是由于摩擦引起的。 32. 如果你坐船穿越太平洋，你要跨过日界线。 33. 那个穿白衬衣的女孩是谁？ Unit 2 Technology and life I. Communicative English （Choose the best Answer） 1. A 2. C 3. A 4. C 5. A II. Vocabulary and structure 6. D 7. C 8. D 9. A 10. B III. Cloze 11. C 12. D 13. D 14. B 15. A 16. C 17. D 18. D 19. C 20. B IV. Reading Comprehension Passage 1 21-25. C C D A B Passage 2. 26-30. B A C B D V.Translation 31. 我每天晚上都满有兴趣地读当地的报纸。 32. 我用包把脸连挡住，避开烟雾和热气。 33. 他在音乐和绘画方面都很有天赋。  Unit 3 career and achievement I. Communicative English （Choose the best Answer）