第二部分英语知识运用（共两节，满分35分）
第一节 单项填空（共15小题；每小题1分，满分15分）
21.Jumping out of ____ airplane at ten thousand feet is quite ____ exciting experience.
A. /; the B. /; an C. an; an D. the; the
22.—I'll be away on a business trip. Would you mind looking after my cat?
—Not at all.________.
A.I have no time B.I'd rather not
C.I'd like it D.I'd be happy to
23. ______ buildings had been ______ after the earthquakes.
A.A large number of; in ruins B.The great number of; in ruins
C.A great number of; in ruin D.The good number of; in ruin
