第二部分： 英语知识运用（共3节，共66分）
第一节:单项填空(共16小题;每小题1分,共16分)
15. Air is to human ____ water is to fish.
A. that B. what C. which D. where
16. In recent years, a series of landmark buildings by international architects have been set up in Beijing.
A. designed B. to be designed C. designing D. having designed.
