27. It was in the beautiful park ________was located by the sea ________we first met our new Chinese teacher.

A. where; which 　　　　　　　　　　　　　　　　　 B. that; which

C. that; that 　　　　　　　　　　　　　　　　　 D. which; where

26. He couldn’t ______ the fact that the money was found in his house. A. answer for　　　 B. leave for　　　 C. account for　　 D. care for

25. When he tried to make a (n) ________, he found that the hotel that he wanted was completely filled.

A. complaint　 B. claim　 C. reservation　 D. appointment

24. Although his leg was hurt,, he ______swim to the bank. 　 A. could　　　 B. should　　　 C. must　　 D. was able to

23. Cell phones are now widely used ,______ possible for us to talk to anyone from almost anywhere. 　 　A. make it　　 B. to make it　　 C. making　　 D. making it

22. I’d appreciate ____ if you can teach me how to use the computer.

A. that　 B. it　 C. this　 D. you

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，并在答题卡上将该项涂黑。

21. -----Would you mind giving me advice on how to improve my record ?

------ If you make ______ most of your potential, there will be _____ rise in your achievement.

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

21. (本题满分14分)

(理)已知数列满足：,

(1).求的值。

(2)求数列的通项公式。

(3)求证：

(文)设数列的前项和为且对任意正整数，点在直线上.

　(1)求数列的通项公式；

　(2)是否存在实数，使得数列为等差数列？若存在，求出的值，若不存在，则说明理由；

　(3)设满足：为数列的前项和，求证：