听力原文：M: Are you the head resident？W: Yes.M: I'm Bill Miller. I'm here because I want t

听力原文：M: Are you the head resident？

W: Yes.

M: I'm Bill Miller. I'm here because I want to change roommates.

W: Really？ That surprises me. I thought that you and David were good friends.

M: We were. You see, we knew each other before. We are from the same home town, but it looks like we had different reasons for coming to college.

W: How so？

M: Well, David is really into having fun, which is great. But be has so many people in our room all the time that I can't study. And the stereo is on constantly.

W: Have you talked to him about it？

M: Yes, but he just doesn't take me seriously.

W: I see.

M: Miss Todd, I have to study. I'm on scholarship. David isn't.

W: Okay. Here's what we can do. Let me talk to David, and then you see how it goes. Just one week.

What do the speakers mainly discuss？

A．The man wants to get authorization for a room change.

B．The man is worried about his friendship with his roommate,

C．Then man needs a scholarship to continue living in the dormitory,

D．The man wants the head resident to talk to David for him.