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,每题１分,满分１５分)
21. _____ information project has been set up recently to ensure _____ flight safety.
A. An; the B. The; the C. The; 不填 D. An; 不填
22. Rather than _______ on a crowded bus, he always prefers ______ a bicycle.
A. ride; ride B. riding; ride C. ride; to ride D. to ride; riding
