第一部分听力（共20小题；每小题1。5分，满分30分）
第一节请听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选择项中选择出最佳选项，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. When is the two speakers’ mom’s birthday?
A. On July 10th. B. On July 11th. C. On July 12th.
2. What are the two speakers probably talking about?
A. A car driver. B. A careless mistake. C. A car accident.
