听力原文：W: It's seven o'clock already, dear.
M: Yes, I know. I decided to work during the evening rush hour.
W: And so your dinner's cold. Why do you work so hard？
M: I just start, and then I can't stop.
W: You can stop any time. You don't need to keep on working at all.
M: And then what could I do？
W: We could move to Florida.
M: Oh, Florida. Is it any better than New York？
W: It's warm and sunny all year round. No more snow, no more ice.
M: And what about the children and the grandchildren？
W: They could come, and visit us every winter.
M: And what would we do every spring, summer, and fall？
W: A lot of our friends have moved to Florida. We know a lot of people there.
M: Well, I'll think about it.
What do you think the man is？ Why？

A policeman. Because he works hard.
B. A postman. Because he often works late.
C. A taxi driver. Because he often works through the evening rush hours.