0  424070  424078  424084  424088  424094  424096  424100  424106  424108  424114  424120  424124  424126  424130  424136  424138  424144  424148  424150  424154  424156  424160  424162  424164  424165  424166  424168  424169  424170  424172  424174  424178  424180  424184  424186  424190  424196  424198  424204  424208  424210  424214  424220  424226  424228  424234  424238  424240  424246  424250  424256  424264  447090 

26. _______ David says sounds right to Helen. That’s why she has made up her mind to live with him _______ happens.

A. Whatever; whatever                   B. No matter what; whatever

C. No matter what; No matter what         D. Whatever; however

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25. ----Many a student _______ visited the great wall.

----Yes, they each _______ their own opinion of it.

A. had, has                B. have, had       C. have, has    D. has, have

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24. _______ worried her a bit that he couldn’t get in touch with her friend

A. This                B. That           C. It           D. What

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23. ---- Are there any apples in the bag?    

----  _______. In fact, there is _______ in it.

A. Nothing, nothing     B. None, none      C. None, nothing       D. No one, nothing

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22. Just because they make more money than I do, _______ they seem to look down on me.

A. so                      B. and                C. but          D. 不填

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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. He suggested the problem worth paying attention _______ at the meeting.

A. to be discussed           B. to discussing      C. to discuss        D. to being discussed

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22.解:(1)………………….1分

由题意得,……………….2分

经检验满足条件。…………………………………….3分

(2)由(1)知

(舍去)………………4分

当x变化时,的变化情况如下表:

x
-1
(-1,0)
0
(0,1)
1

 

0
+
 

-1

-4

-3

…………………………6分

∵关于x的方程上恰有两个不同的实数根,

……………………8分

(3)由题意得,

………………9分

①若单调递减。

∴当

②当a>0时随x的变化情况如下表:

x


(,+)

+
0
-




…………………………12分

综上得a>3.…………………………14分

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22.(满分14分)已知函数

  (1)若处取得极值,求实数a的值;

  (2)在(1)的条件下,若关于x的方程上恰有两个不同的实数根,求实数m的取值范围;

  (3)若存在,使得不等式成立,求实数a的取值范围。

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