一、 听力（共两节，满分35分）
第一节 听力理解（共15小题；每小题2分，满分30分）
每段播放两遍。各段后有几个小题，各段播放前每小题有5秒钟的阅读时间。请根据名段播放内容及其相关小题，在5秒钟内从题中所给的A、B、C选项中，选出最佳选项，并在答题卡上将该项涂黑。
听第一段对话，回答第1~3三个小题。
1. Why was Mike late on Monday?
A. Because the bus broke down.
B. Because there were no buses running by.
C. Because he got up late that morning.
2. When does the class begin?
A. At 7:15 a.m. B. At 8:00 a.m. C. At 8:20 a.m.
