听力原文:W: Why didn't you have your geology class today?M: Only three out of a class of t
听力原文:W: Why didn't you have your geology class today?
M: Only three out of a class of twenty-five showed up. Since the professor had planned to present a complex demonstration, he decided to cancel the class until everybody could be present.
Q: Why didn't the geology class meet today?
(18)
A.The class thought the demonstration was too complex.
B.Too many students showed up.
C.The professor didn't show up.
D.The professor cancelled it.