0  352760  352768  352774  352778  352784  352786  352790  352796  352798  352804  352810  352814  352816  352820  352826  352828  352834  352838  352840  352844  352846  352850  352852  352854  352855  352856  352858  352859  352860  352862  352864  352868  352870  352874  352876  352880  352886  352888  352894  352898  352900  352904  352910  352916  352918  352924  352928  352930  352936  352940  352946  352954  447090 

27. Each player tried his best to _________ the game.

  A. beat       B. defeat          C. catch         D. win

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26. He is always telling lies. Don’t be __________ by his sweet words.

  A. taken on      B. taken over        C. taken in         D. taken away

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25. _______ the days going on, the weather is becoming hotter and hotter.

  A. With        B. Since          C. While           D. As

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24. We tried to ______ his doubts and let him tell the truth.

  A. replace       B. review          C. remove          D. rebuild

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23. Advertisements are a good __________ sell products or services.

  A. means to      B. way of          C. way to              D. approach to

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22.Violence (暴力) computer games may have a bad ____________ on children.

  A. affect            B. pressure         C. influence         D. power

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第一节: 单项选择 (共15小题;每小题1分,满分15分)

从A、B、C、D四个选项中,选出可填入空白处的最佳选项。

21. Mary is often heard ________ playing piano in the next room in the evening.

  A. practise       B. to practise        C. practising         D. practiced

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20.(本题满分16分)

设数列的前项和为,若对任意,都有.

⑴求数列的首项;

⑵求证:数列是等比数列,并求数列的通项公式;

⑶数列满足,问是否存在,使得恒成立?如果存在,求出 的值,如果不存在,说明理由.

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