二、对话理解 听下面三段对话，从每小题A、B、C三个选项中,找出相应问题的最佳答案。［听每段对话前，你将有时间阅读各小题，每小题5秒钟；听完后，各个小题将给出5秒钟的作答时间。每段对话读两遍。］（每小题1. 5分，共15分）
听第一段对话，回答第6-8小题。
6．What is Mike doing?
A．He’s smoking in the room.
B．He is reading in the sun.
C．He’s listening to the radio.
7．Why does Maria’s father like smoking?
A．Because he thinks smoking can help him relax.
B．Because he thinks smoking can stop him from coughing.
C．Because he thinks smoking can make him fight against illness.
