单项选择题
[听力原文] M: I think I can check out as many books as possible with the student card. W: But not the reference books.
A.Teacher & student. B.Editor & reader. C.Librarian & student. D.Shop- assistant & customer.
A.5 minutes. B.10 minutes. C.15 minutes. D.25 minutes.
A.They were not happy. B.They are happier. C.They used to be happier. D.Jane is not as happy as her husband.