26. The way________ _________ the problem sounds reasonable.

　　　 A. referred; to solve 　　　　　　　 B. referred to; solving　　　　　　　　　　

C. referred to; to solve　　 　　 D. referring to; to solve

25. The ______ you make, the ________ you will make.

　　　 A. more efforts; more progress 　　 　　B. greater progress; greater efforts

　　　 C. more efforts; more progresses　　　　　 D. many more efforts; much progress

24. It is the third time that Susan ______ late to work and it’s high time that she ________the truth.

　　　 A. has come; tell 　　　　　　 B. has come; told　　 C. came; should come D. had come; told

23.- They said they were going to go camping in spite of the rain.

　 - That’s _________ I disagree.

　　　 A. what 　　　　　　 　　B. where 　　　　C. that　　　　　　　 　　　　 D. which

22. - ______the bike be repaired by him?

-No, I’d rather he ______ it repaired．

　　　 A. Will; has 　　　　 B. Shall; had　　　　　　　 C. Should; have　　　　 D. Can; has

21. - What about ______ lecture you attended yesterday?

　　　 - To tell the truth, it was too boring．I can't stand ______ lecture like that．

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

22.(本小题满分12分)

已知函数，其中

(1)若曲线在点处的切线方程为,求函数的解析式；

(2)讨论函数的单调性；

(3)若对任意的，不等式在上恒成立，求实数b的取值范围。

21.(本小题满分12分)

已知各项均为正数的数列中，，是数列的前n项和，对任意的,有

(1)求常数的值；

(2)求数列的通项公式；

(3)记，求数列的前n项和。