听力原文：W: Did you have a good time last weekend? M: Yes, I did. I visited some friends in Pennsylvania. They live in a small town called Canonsburg. W: That must have been interesting. I've never been in a small town——just big cities. M: Neither had I. W: What did you do? M: There isn't as much to do as there is here. No plays or concerts, that is, people make their own entertainment, though. W: What do you mean? M: Well, Saturday we went to a potluck supper. W: A potluck supper? What's that? M: The whole neighborhood has a party. Everybody brings something. It's all put on the table and you can eat whatever you like. That is a potluck supper. W: It's something like a picnic, isn't it? M: Well, yes. The weather was warm, so we had this one outdoors. But in winter they have them indoors too. W: What else did you do? M: Sunday we went for a drive. We had lunch at a drive-in. W: Is the countryside interesting? M: Beautiful farmland. You'd like it. W: I'm sure I would. M: Sunday evening some people came to dinner. It was very informal we just sat around and talked. Just a nice Sunday night supper. W: That's the kind of evening I like. I don't care for a formal dinner so much. M: Neither do I. (20)