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25.I would appreciate     , to be frank, if goods could be delivered as soon as possible.

    A.you           B.this           C.it             D.myself

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24.While building a tube through the mountain,     .

    A.an underground lake was discoverd

    B.there was an underground lake discovered

    C.a lake was discovered underground

    D.the workers discovered an underground lake

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23.Eventually, the President had to leave office     public pressure in order to ease the tension of the situation.

    A.in favor of      B.in response to  C.n return for     D.in honour of

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22.There are plenty of jobs     in the western part of the country.

    A.present        B.available       C.precious       D.convenient

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第一节:单项填空(共15小题,每小题1分,满分15分)

从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

21.---Stay a bit longer, please. It’s been such     fun having you here.

   ---Thank you, but I’ve got     early start tomorrow morning.

    A./; the          B.a; an          C./;an           D.the; an

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22.(本小题满分14分)

   设直线过抛物线

  (I)若,求MN所在直线方程;

  (II)若轴上截距的取值范围;

  (III)抛物线C的准线的夹角为定值。

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21.(本小题满分12分)

   设函数

  (I)若函数处的切线为直线相切,求a的值;

  (II)当时,求函数的单调区间。

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20.(本小题满分12分)

     甲、乙两人共同抛掷一枚硬币,规定硬币正面朝上甲得1分,否则乙得1分,先积得3分者获胜,并结束游戏。

  (I)求在前3次抛掷中甲得2分,乙得1分的概率;

  (II)若甲已经积得2分,乙已经积得1分,求甲最终获胜的概率。

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