27. To her disappointment, what she had devoted herself to _______ in nothing but failure.

A. resulting　 　　 　　　 　B. results　　　　　　 C. has resulted　　　　 D. resulted

26. ______ I enjoy the book with some nice pictures, I don’t have enough money to buy it.

A. Since　　　　　 B. While　　　　　　 C. As　　　　　　　　 D. If

25. I used to go camping a lot, so it won’t be the first time I 　　　　in a tent.

A. have slept　　　　 B. had slept　　　　 C. was sleeping　　　　 D. slept

24. We went to Mountain Tai last weekend, ______, not surprisingly, was crowded with visitors.

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

23. The company provides cheap Internet access. _______, it makes shareware freely available.

A. In addition　　　 B. In brief　　　　　 C. In return　　　　　 D. In common

22. -Better get down to your work, Jack.

- ________ .

A. It’s my pleasure　　　　　　　　　 B. Not to mention it

C. Mind your own business　　　　　 D. You are welcome

第一节 语法和词汇(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. _______ global financial crisis is 　　__ challenge for the whole world. Confidence, cooperation and responsibility are keys to overcoming the crisis.

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

22.(14分)已知向量,向量与向量夹角为，且.

　 (1)求向量；

　 (2)若向量与向量的夹角为，其中，为

△的内角，且，，依次成等差数列，试求||的取值范围.