第一节 听下面5段对话。每段对话后有一个小题，从题中给出的[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。 When will they probably discuss the plan

A． Go to a maths class.
B． Go to the lab.
C． Go swimming.

[A] Not telling her parents about the party.
B. Not keeping her plans secret.
C. Not keeping tile MP3 player well.