第二部分 英语知识应用（共两节，满分35分）
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. —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
