0  295997  296005  296011  296015  296021  296023  296027  296033  296035  296041  296047  296051  296053  296057  296063  296065  296071  296075  296077  296081  296083  296087  296089  296091  296092  296093  296095  296096  296097  296099  296101  296105  296107  296111  296113  296117  296123  296125  296131  296135  296137  296141  296147  296153  296155  296161  296165  296167  296173  296177  296183  296191  447090 

27.In the Gulf of Mexico the animals' presence close to shore means their usual habitat is badly polluted, and the crowding could ________ mass die-offs as fish run out of oxygen.

A. result from           B. benefit from      C. devote to              D. result in

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26.Two pages of the original manuscript (底稿) of Albert Einstein's General Theory of Relativity were________  on display in the Israel Pavilion of the 2010 World Expo in Shanghai.

A.put up      B set down       C. sent up             D. taken up

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25.Keep in mind: your efforts will ______.Don’t let one or two failures over the year get you down.    

A  take off      B. put off       C. pay back       D. pay off

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24.The government _________ the diplomatic (外交的) note from that country for its unclear         attitude to the trade between two countries.

    A. denied             B. suggested           C. rejected         D. ignored

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23.Having finished his morning work, the manager stood up behind his chair, _______ himself.   A. practising    B. spreading     C. stretching          D. extending  

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22.She’s hoping her first performance in the US will be the first step on the road to success, then she wants to try her ________ in Hollywood.

     A. profit            B. fortune        C. distinction           D. wealth

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第一节:多项选择(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。

21.As a good teacher, he should use different ways to encourage all children to realize their full

       and achieve their goals.

    A.possibility     B.motivation     C.potential         D.awareness

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21.(本小题满分14分)

已知函数处有极大值.

(Ⅰ)求的值;

(Ⅱ)若过原点有三条直线与曲线相切,求的取值范围;

(Ⅲ)当时,函数的图象在抛物线的下方,求的取值范围.

湖北省黄冈中学2010年春季高二数学(文科)期末考试

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20.(本小题满分13分)

 已知函数的图象在点处与直线相切.

(Ⅰ)求的值;

(Ⅱ)求的单调区间.

(Ⅲ)求函数在区间上的最大值和最小值.

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19.(本不题满分12分)

用长度为定值的铁丝围成一个底面边长是,体积是的正四棱柱形状的框架.

(Ⅰ)试将表示成的函数,并指出的取值范围;

(Ⅱ)当正四棱柱的底面边长和高之比是多少时,其体积最大?

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