[单项选择]

M: When in Rome, do as the Romans do, they say.
W: What do the Romans do
M: They live in Rome, of course, and go to work by car or bus. But sometimes it takes too long that way because of the traffic jams, so they walk.
W: In other words, the Romans do what everyone else does.
M: Yes, but they do it differently. Everything is different.
W: What do you mean
M: Well, the climate is different for a start. It doesn’t rain so much as it does in England. The sun shines more often.
W: I envy them for the sun.
M: I know. You hate the rain, don’t you
W: I certainly do.
M: And a Roman really loves life. They always eat spaghetti and drink wine.
W: Not always，but they like a good meal. Lots of tourists go to Rome just for food.
M: Sure.

What’s the relationship between the two persons （）
A. Wife and husband.
B. Salesman and customer.
C. Teacher and student.
D. Employer and employee.