第二部分 英语知识运用(共两节，满分50分)
第一节 单项填空(共20小题；每小题1分，满分20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，并在答题卡上将该选项涂黑。
21. First impressions are the most lasting. After all, you never get _________ second chance to make _______ first impression.
A. a; the B. the; the C. a; a D. the; a
22.-- What do you think of the lecture?
-- but interesting, but I’ve managed to survive it.
A. Nothing B. Everything C. Anything D. Something
23. — Do you happen to have twenty dollars on you?
— ____?
— I want to buy a reference book.
A. Do you want the money B. What will you want to do
