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24.-Tom is said to have been accused of mismanagement.

   -It’s not fair.I don’t think him the person       for what happened.

   A.to be blamed                                      B.to blame

   C.blamed                          D.blame

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23.In the character-training of children,what really     much is what their parents

   say and do.

   A.matters         B.concerns       C.cares           D.minds

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22.In face of     failure,we should keep up    good state of mind instead of being depressed. 

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

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第一节:从下面每个句子后面所给的A、B、C、D四个选项中选出一个最佳答案。(共15小题,每小题1分,计15分)

21.     your worries with the friend you trust,-you will feel relieved.

A.Share                           B.To share       

C.Sharing                          D.Having shared

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22.(14分)

如图,A是单位圆与轴正半轴的交点,点在单位圆上,

,四边形的面积为

  (1)设,求的最大值及此

的值。;

  (2)以为始边作角,它们终边分别与单位圆相交于

点用向量的数量积证明;

  (3)利用(2)的结论推导公式:

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21.(12分)

给定函数),

  (1)求函数的定义域;

  (2)当时,求的取值范围;

  (3)当时,判断函数的单调性,并证明你的结论。

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20.(12分)

已知函数有两个零点1和3,且对,不等式恒成立,求满足条件的的解集。

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19.(12分)

设函数,且

  (1)求证:函数有两个零点;

  (2)设是函数的两个零点,求的取值范围。

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