25. ________ theme of the Shanghai Expo is “Better city, better life”.　 It will send _____ message to people around the world to care about the places where they live.

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

24.　 Toyota Motor President Akio Toyoda on Monday apologized to Chinese consumers , who ________ the world's biggest auto market , over the company's massive global recall.

A. make up　 B. bring up　　 C. put down　　 D. set down

23. A salty diet may increase the risk of stomach cancer ________ 10 percent, South Korean researchers found in a study of more than 2 million people.

A. at　 　　B. to 　　　　C. by　 　　　D. for

22.　 Some people are worrying about the possibility ________ cellphones could be responsible for a range of illnesses, from rashes to brain tumors.

A. that　 　　B. why　 　　C. how　 　　D. whether

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。

21. - Would you mind my coming over and having a look at your new garden? My little son’s curious about those roses you grow.

-________. You are welcome.

A. Yes, I do　　 　 B. Never mind　　 C. Yes, please　 D. Not at all

22.已知数列满足

(1)　　　 求数列的通项；

(2)　　　 设，证明：对任意，且，都有

21.如图,设抛物线的准线与轴交于,焦点为.以,为焦点,离心率的椭圆与抛物线在轴上方的交点为,延长交抛物线于点,是抛物线上一动点,且在与之间运动.

(1)当时,求椭圆的方程;

(2)当的边长恰好是三个

连续的自然数时,求面积的最大值.

20.已知函数.

(1)若函数在定义域内单调递增,求的取值范围;

(2)若,且关于的方程在上恰有两个不相等的实数根,求实数的取值范围;