单选题 Man: I thought the librarian said we could check out as many books as we need with our library cards.
Woman: That's right, but not those reference books.
Question: What does the woman mean?
A. Students with a library card can check any book out.
B. Reference books are not allowed to he checked out.
C. Only students with a library card can check out reference books.
D. The number of books a student can check out is unlimited.

【正确答案】 B

【答案解析】[解析] 女方说的“but not those reference books”相当于“but we could not check out those reference books”(但我们不能外借那些参考书)。B的内容与本句意思一致，所以是正确答案。