25. I’ve left the washing outside. If it ________ rain, can you bring it in?

A. would　 　B. should　 C. may　 　　D. can

24. It is said that John’s wife and his children _______ to see him off before the launch, but they failed because of the rules.

　 A. had hoped　　 B. hope　 C. have hoped　　 D. were hope

23. Jack, _______ to be here at 8 o’clock.

A. is sure　　　　　 B. is sure that　　　 C. will be sure　　 D. be sure

22. To help myself get to sleep, I have tried several ways but it seems that _______works.

A. nothing　　　　　 B. none　　　　　 C. neither　　　　　 D all

第一节 单项填空(共15小题, 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. _______Chongqing you see today is quite ______ different city from what it used to be.

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

21．(本小题满分12分)

已知曲线在点处的切线方程为,其中

(1)　 求关于的表达式;

(2)　 设，求证:;

(3)　 设,其中,求证:.

万二中高2010级高三3月月考

20．(本小题满分12分)

已知.

(1)求函数的图象在处的切线方程；

(2)设实数,求函数在上的最小值；

(3)证明:对一切,都有成立.