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27.There are signs that there is a growing tendency for people to turn away from ________ western medicine to alternative methods of treatment.

A.conventional                        B.pessimistic        C.bureaucratic       D.theoretical

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26.Government should adopt laws that would ban advertising and other types of ________ of tobacco products.

A.delivery                                           B.spread         C.promotion        D.discount

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25.The managing director took the ________ for the accident, although it was not really his fault.

A.guilt                                               B.response         C.blame            D.accusation

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24.The former Olympic champion was ________ in the quarterfinals last night when he lost 0-2 at home.

A.knocked off                        B.knocked out       C.knocked down     D.knocked over

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23.The workers agreed to ________ the strike if the company would satisfy their demands.

A.call for                                            B.call in          C.call off           D.call up

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22.These articles ________ the problems of the modern world, including race relations and community development.

A.address                                           B.avoid              C.create            D.correct

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第一节:单项选择(共10小题;每小题1分,满分10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,并在答题卡上将该项涂黑。

21.Urban crowdedness would be greatly relieved if fares ________ on public transport were more reasonable.

A.offered                                            B.spent              C.paid             D.charged

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21.(本小题满分14分)(注意:在试题卷上作答无效)

    设数列的前项和为,对一切,点都在函数 的图象上.

  (Ⅰ)求及数列的通项公式

  (Ⅱ) 将数列依次按1项、2项、3项、4项循环地分为(),(),(),();(),(),(),();(),…,分别计算各个括号内各数之和,设由这些和按原来括号的前后顺序构成的数列为,求的值;

  (Ⅲ)令(),求证:

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