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答案,并将其标号填入题前括号内。每段对话读两遍。
( )1. Why doesn 't the boy like answering questions in English classes?
A. Because he’s afraid of making mistakes.
B. Because he’s a little shy.
C. Because he doesn't know them.
( )2. How many times has Mary been to Beijing?
A. Twice. B. Once. C. Never
( )3. Where are the two speakers probably talking?
A. In a hospital; B. In a school. C. In a station.
