第二部分英语知识运用（共两节，满分40分）
第一节 单项填空（共20小题；每小题1分，满分20分）
21. I didn’t take part in ____ singing competition last Sunday because I was afraid of losing ____ face.
A. a; the B. a; / C. the; a D. the; /
22. Everybody's fingerprints are _______, so the police can easily find the thieves if any is left when they're stealing.
A. single B. particular C. special D. unique
23. They are good friends.______ is no wonder that they know each other so well.
A.This B.That C.There D.It
24. Tom was about to close the window _______ his attention was caught by a bird.
A. when B. if C. and D. till
25. The advantage of using the Internet is ______ you can get support if you have a problem.
A. whether B. what C. why D. that
