第一部分:听力(共两节，满分20分)
第一节（共5小题海小题1分，满分5分）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。每段对话仅读一遍。
1．What does the man want？
A．Two single tickets. B．Two return tickets. C．One return ticket.
2. What can we learn from the conversation？
A．Gas is more expensive now． B．Gas is cheaper than before．
C．The man likes walking more than driving．
