题目列表(包括答案和解析)

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29. _______,it’s time we ____ ourselves to the research work.

  A. To clarify; apply                 B. To clarify; applied 

C. Clarifying; should apply              D .Having clarified; should apply

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28. Not only ________many people’s lives by reducing fever and helping stop pain, but _______ other things that aspirin can help with.

  A. has aspirin saved; there are also           B. aspirin has saved; there are also

  C. has aspirin saved; are there also           D. aspirin has saved; are there also

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27. There is nobody else in the company______ the club.

A. participating in                        B. joining in        

C. joining                             D. belonging to

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26. The professor from the US will give us a speech ______ American Indian customs.

A. concerning                   B. concerning about 

C. concerned                    D. concerned about

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25. Looking back _____ the past experiences, he felt happy to have been able to help _____ the individual level.

A. to ; with          B. on; at         C. on; on            D. for; with

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24. His recent strange behaviour made the police ________.

  A. submissive         B. suspicious        C. mysterious        D. officious

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23. It’s unfortunate _____ them to be _____ by the heavy snow for 3 days.

A. for; held back                   B. of; held down  

C. for; held out                    D. of; held up

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22. He found it ______ to______ the responsibility.

A. worthwhile; put on                 B. worthy; work on 

C. worthy; take on                  D. worthwhile; take on

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第一节  单项填空(共25小题;每小题1分,满分25分)

从A、B、C、D四个选项中选出可以填入空白处的最佳选项。

21. Why do we still sunbathe when we know ____________ to sunlight for too much time will do harm to our skin?

A. having exposed      B. exposed         C. to be exposing            D. being exposed

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同步练习册答案