【单选题】听力原文:W: Look, I'm sorry, but (23)the books for Chem. 100 aren't in yet. M: Why not? School started last week. W: I really don't know. Maybe the professor ordered them late, or the publisher ran out of...
A.
A notice on the bulletin board.
B.
A book for a class the man is taking.
C.
A chemistry class that is being taught.
D.
The library reserve desk.