大学英语三级词汇结构专项训练.ppt

Vocabulary and Structure 2003.11 16. Today books are_____ to everyone because they are no longer expensive. A. available B. preferable C. reliable D. actual 答案：A 词义辨析。Available 可用的，可以得到的。Preferable 更可取的，更好的。Reliable 可靠的，可信赖的。Actual 实际的，真实的。根据句意应选A。 17. We shall ask for samples_____ and then we can make our decision. A. to be sent B. being sent C. to sent D. to have been sent 答案：A 不定式的用法。送样品是将来要发生的动作，所以应该用不定式；但是样品和送之间是被动关系；综合两个知识点应选A。 Vocabulary and Structure2003.11 18. The forest fire caused by the volcano is difficult to be_____. A. put off B. put away C. put out D. put up 答案：C 短语辨析。根据题干大火应该是被扑灭的，应选C，put out 扑灭，出版。 19. It was not_____ midnight that they discovered the children were not in their beds. A. before B. at C. after D. until 答案：D 固定搭配。It is…that 是一个强调句，可以看出本句强调的是时间。A、B、C、D项都可以和midnight 进行搭配，但能和not 连用表示强调的只有D项，只有….才….。 Vocabulary and Structure2003.11 20. The girl is not happy at the new school. She has _____ friends there. A. few B. a few C. little D. quite a few 答案：A 词义辨析。A项是几乎没有的意思，而且few还是修饰可数名词的，其它项都不符合题意，所以应选A。 21. Robots have already_____ human tasks in the industrial field. A. taken on B. taken out C. taken up D. taken over 答案：A 词义辨析。take on 承担，从事。take out 拿出，带出。take up 开始从事，占据。take over接管，接收。根据句意应选A项。 Vocabulary and Structure 2003.11 22. I can’t find the recorder in the room. It ____ by somebody. A. must have taken B. may have taken C. may have been taken D. should have been taken 答案：C 情态动词的推测。首先根据by可以看出应该选的是被动式，首先可排除A和B项，而C项的may 是对现在或过去不太肯定的推测，D项should表示据事实而论，所以根据句意应选C项。 23. He took the medicine, but it didn’t have any_____. A. answer B. cause C. effect D. effect 答案：C 词义辨析。Answer 答案。Cause 原因。Effect 作用，影响。Effect 工作。据句意应选C。 Vocabulary and Structure 2003.11 24. It is__