0  375526  375534  375540  375544  375550  375552  375556  375562  375564  375570  375576  375580  375582  375586  375592  375594  375600  375604  375606  375610  375612  375616  375618  375620  375621  375622  375624  375625  375626  375628  375630  375634  375636  375640  375642  375646  375652  375654  375660  375664  375666  375670  375676  375682  375684  375690  375694  375696  375702  375706  375712  375720  447090 

24.  --- Do you think living in the country has advantages?

    --- ____.

   A. Yes, perfectly    B. Yes, it is  C. Well, that depends  D. Nothing at all

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23. - Can you give me some advice about the design?

- I think it should _______ to all ages and social groups.

A. appear    B. appeal    C. suit     D. fit

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22.--- How come your father can read books in German?

   --- Well, he     on a project with some German engineers for 3 years when he was young.

     A.worked      B.was working      C.had worked             D.would work

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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。

21.It was reported that 115 miners      in the flooded mine for eight days were pulled out alive at last.

     A.trapped  B.being trapped  C.were trapped  D.had trapped

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21.设函数

(Ⅰ)若,求的极小值;

(Ⅱ)在(Ⅰ)的条件下,是否存在实常数,使得?若存在,求出的值.若不存在,说明理由.

(Ⅲ)设有两个零点,且成等差数列,试探究值的符号.

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20.已知数列中,时,

(Ⅰ)证明:为等比数列;

(Ⅱ)求数列的通项;

(Ⅲ)若数列满足,求的前项和

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19.如图所示,在一条海防警戒线上的点处各有一个水声监测点,两点到点的距离分别为千米和千米.某时刻,收到发自静止目标的一个声波信号,8秒后同时接收到该声波信号,已知声波在水中的传播速度是千米/秒.

(Ⅰ)设的距离为千米,用表示的距离,并求的值;

(Ⅱ)求到海防警戒线的距离.

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18.数列已知数列的前项和是,且

  (Ⅰ)求数列的通项公式;

  (Ⅱ)设,求适合方程的值。

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