【正确答案】 A

【答案解析】[解析]
Woman: Jim, thank goodness you arrived, the class presentation started half of an hour. ago, and I was just beginning to panic.
Man: I'm sorry I'm late, Aileen, this morning has been real mess. I didn't take out to make it here at all!
Woman: Why are you late? Our whole presentation depends on these graphs you are holding.
Man: Yes, I know. I'll tell you about it later. First, Let's see how we are doing. Two groups are still holding off, aren't they? The presentation on the rights of consumer and the analysis of the stock market. That means I'll get 20 minutes to prepare.
Woman: You do look cold, what happened?
Man: I've been standing outside in arctic temperature for over an hour waiting for a bus.
Woman: Over an hour? But I thought your apartment was only 10 minutes' bus ride to campus.
Man: At the normal conditions yes, but the bus was delayed because of the weather. And when I step 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. Woman: That's Murphy's law, isn't it? If anything can go wrong, it will. Well, we'll still get 20 minutes to get our wits together.
Man: We'd better stop talking, people are turning around and looking at us.