听力原文:W: I'm trying to finish these practice test questions but I've still got about 12
M: Oh, that explains why you've been hiding in here. You probably haven't heard that the professor postponed the exam until further notice.
Q: What does the man mean?
(17)
A.The professor postponed the exam and will inform. everyone later.
B.The professor phoned him about the postponing of the exam.
C.The professor canceled the exam.
D.The professor put off the exam.