听力原文:W: It looks like I'm going to be a little late for class. I hope Prof. Clark does
M: Are you kidding? You can set your watch by the start of his class.
Q: What can be inferred about Prof. Clark?
(16)
A.He rarely noticed when students are late.
B.He is usually punctual.
C.He advised his students to wear watches to class.
D.He has been unpredictable.