Part B Directions: You will hear four dialogues or monologues. Before listening to each one, you will have 5 seconds to read each of the questions which accompany it. While listening, answer each question by choosing A, B, C or D. After listening, you will have 10 seconds to check your answer to each question. You will hear each piece ONLY ONCE. 听力原文：M: Jane, let's go swimming at the Student Center. W: I'd like to, Tom, but I have a paper due on Friday, and I haven't even started it yet. M: Just an hour. I've got n test tomorrow, so I won't be able to stay very long. W: I need the exercise, but I just can't spare the time. M: Okay, how about dinner at the Grill? You have to eat something, and it's right by the library. I'll go over there with you after dinner, and you can do your research while I study for my test. W: Well, but... M: Come on. You'll probably want to stay late, and you shouldn't walk home after dark. I'll stay until you're ready to go. W: That would be nice, but... M: Look, we really wouldn't be wasting any time. We'd just be doing everything we need to do, hut we'd be doing it together. I just want to spend time with you. W: Me, too. Okay. I need to go home first, then I'll meet you at the Grill about six. Is that all right? M: That's great. We'll get everything done. You'll see. What do Tom and Jane mainly discuss?