听下面5段对话或独白。每段对话或独白后有几个小题，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。听每段对话或独白前，你将有5秒钟的时间阅读各个小题；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。

单选题 When are they leaving?

A、

A．At five.
B、

B．At six.
C、

C．At seven．

【正确答案】 B

【答案解析】[听力原文]6-7 M: Are you going with us to the concert, Helen? W: Maybe. I'm not sure. M: You'd better make up your mind. We're leaving at six. W: No, I don't think I will. I've got too much to do. I'm going to stay home.

单选题 Why won't Helen go to the concert? A．She has too much to do． B．She is ill. C．She wants to study．

【正确答案】 A

【答案解析】