第二部分  英语知识运用(共两节,满分45分)
第一节:单项填空(共15小题;每小题1分,满分15分)
21.-Excuse me, Sir, is the swimming pool open all day?
-____.Only from 6:00 pm to 10:00pm.
A. That’s right         B. Yes, of course
C. Sorry, I’m not sure   D. Sorry, I’m afraid not
22.The unemployment rate in this city ____ from 7% to 6% in the past two years.
A. has fallen   B. had fallen        C. is falling         D. was falling