III. 单项选择（共10小题，每小题1分，满分10分）
11.She listened with a________expression on her face,which suggested she didn’t completely understand.
A.puzzling B.frightened C.frightening D.puzzled
12.______has helped to save the drowning boy is worth praising.
A.Who B.The one C.Anyone D.Whoever
13.—Where are you going for your holidays this summer?
--Well,it’s not been decided.I______go to the countryside to see my parents.
A.might B.need C.can D.must
14.It is warned that no one is permitted______the lab after 10:00 p.m.
A.enter B.to entering C.to enter D.entering
15.If I cheat in the exam,do you think I can______it?
A.get hold of B.get across C.get rid of D.get away with
16.It won’t be______he______to Taiwan for further study on computer technology.
A.long before;will go B.before long;goes
C.long before;goes D.before long;will go
