单项选择题

第一节
听下面5段对话。每段对话后有一道小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。
听力原文:M: Are you busy tonight?
W: Yeah. I' ye got to study, tonight.
M: Study tonight?
W: Yeah, I'm having an exam tomorrow.
Why did the woman have to study tonight?
A.Because she will have an exam.
B.Because she hasn' t finished her homework.
C.Because she will have a medical examination tomorrow.

A.
M:
B.
Why
C.Because
D.
B.Because
E.
C.Because
F.