单项选择题


听下面5段对话。每段对话后有一个小题,从题中给的[A]、[B]、[C]三个选项中选出最佳选项,并标在试卷的相应位置。每段对话或独前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。每段对话或独白读两遍。
听第6段材料,回答第6~7题。
Why did the man get to sleep so late

A. He is doing some medicine research.
B. He talked with his friend.
C. He felt pain.