单项选择题


第一节
听力理解第一节 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秒种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。
Why were there no phone calls before 4

A. The secretary was ont.
B. The line was out of order.
C. People didn’t phone until 4.