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25.It doesn’t make any sense for tbe Prime Minister to     a banker to this post.

A.choose      B.elect       C.appoint      D.select

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24.一I’we heard that another brand of milk powder has been banned .

-It’s a shame that some companies lack the sense of social responsibility and    

 A.consequence    B.construction   C.consideration   D.conscience

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23.一Why are you so excited,John?

-Our class got the first prize in the singing contest at last,which we      forward to.

 A.have been looking        B.had been looking

 C.looked             D.had looked

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22.一What did he want to know,John?

     that we could finish our work.

 A.What it was   B.When was it  C.When it was D.What was it

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第一节:语法和词汇知识(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.Although everything seems to have been taken into consideration,     accident can happen when the astronauts walk in       space.

 A.不填;the   B.an;the   C.the;the D.an;不填

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22.(本题满分12分)

如图,已知直线与抛物线相切于点,且与轴交于点为坐标原点,定点的坐标为

(1)若动点满足,求点的轨迹.

(2)若过的直线(斜率不等于0)与(1)中的轨迹的交于不同的两点(之间),试求面积之比的取值范围.

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21.(本题满分12分)

设数列的前项和为 

(1)证明当时,是等比数列.

(2)求的通项公式.

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20.(本题满分12分)

   函数  在上[-1,1]是增函数.

(1)求实数的值的集合.

(2)设关于的方程的两根为,试问,是否存在实数,使得不等式对任意恒成立,若存在,求出的取值范围.若不存在,说明理由.

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