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）
16. She was reading a book in her chair ______ first time I saw ______ old lady.
A. a; an B. the；the C. 不填；the D. 不填；an
17. ---John, how did your English exam go?
---I thought I ______, but in fact I came in the top 10% in the class.
A. should have failed B. couldn’ t have failed
C. might have failed D. mustn’t have failed
18. --- My cousin would like to risk _____the weight-loss pills rather than _____ in a gym．
--- Really? She must be mad．
A. to take；work out B. to take；working out
C. taking；working out D. taking；work out
