基本信息
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.What does the man mean?
A.Tom can’t hear them.
B.Tom is visiting his mother.
C.Tom will be unable to come.
2.Where does the conversation probably take place?
A.In a hotel.B.In a library.C.In a laboratory
