SECTION A CONVERSATIONS
Directions: In this section you will hear several conversations. Listen to the conversations carefully and then answer the questions that follow.
听力原文：M: We seem to be having this conversation over and over again.
W: You're right.
M: Look, I know how you feel about my smoking. You don't have to tell me every day.
W: I'm sorry. I worry about you.
M: I know. But work and school have me so stressed out. Maybe I'll be able to quit after I graduate.
W: Let's be honest. There's always going to be a reason. After you graduate, it's going to be hard to find a job, then there will be the stress from just starting a job, then.
M: Okay, I get your point. It's just so hard. You don't really understand because you have never smoked.
W: You need some help. Why don't you go to a doctor？
M: You mean a psychiatrist？
W: No, I don't. I mean a general practitioner. Maybe you can get a patch, or some pills, well, I don't know, something to help you with the withdrawal. M: Really, I believe I can quit on my own. But I'll think about it. I will.
W: All right. I won't mention it for a week. Then I want to know your decision. Because if you don't get some help, I need to rethink our plans.
M: You mean you'd break our engagement over this？ I can't believe it!
W: I don't know. I love you, but I'm not sure I could accept everything that goes along with the smoking.
What is the main topic of this conversation？

A. The man's graduation.
B. The couple's engagement.
C. The man's smoking.
D. The man's stress.