一、听力（30分）
第一节（共5小题；每小题1.5分，满分7.5分）
听下面5段对话。每段对话后有一个小题，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。
1. Why won’t the man help the woman?
A. He’s going on vacation.
B. He can’t be around cats and dogs.
C. He has been hired by someone else.
2. When does the conversation probably take place?
A. In the evening B. In the afternoon C. In the morning
