w: [7]Jim,thank goodness,you've  arrived.The class presentation started half an hour ago and I was just beginning to panic.
M: I am sorry. I'm late, Helen. This morning has been a real mess. I didn't think I was going to make it here at all.
W: Why are you late? Our whole presentation depends on those graphs you are holding.
M: Yes, I know. I'll tell you about it later. First, let's see how we are doing for time. [8 ]of us, aren't they? The presentation on the rights of the consumer and the analysis of the stock market. That
means [9]
w: [9]
M: [9]
W: Over an hour! But I thought your apartment was only a ten-minute bus fide to campus.
M: Under normal conditions. But the bus was delayed because of the weather and when I stepped into a drugstore to call home for a ride, the bus went by. As luck would have it, there was no one at home, so I had to wait another 45 minutes for the next bus.
W: That's Murphy's law, isn't it? What was it he said, "If anything can go wrong, it will." ~ 10~ Well, we've still got 20
M: We'd better stop talking. People are turning around and looking at us.
【听前预测】
根据题干中出现的students，address the class可以推断对话发生在同学之间，时间是在课堂陈述之前。
【对话摘要】
对话发生在同学之间。课堂陈述开始了半个小时之后，男士才赶到，原来由于天气的原因，他在外面等了一个多小时的公交车。但幸运的是还没轮到他们陈述，他还有20分钟的准备时间。正当两人在谈论这一切的时候，发现所有同学都在看他们，原来他们打扰了别人，只好停止交谈。
【试题解析】
B。本题需要根据说话者的语气推断。女士见到男士说：“谢天谢地，你终于来了，课堂陈述已经开始半个小时了，我都要急死了。”由此可见她见到男士终于来了，终于松了一口气，故选B。