听力原文：M: Oh, look at the sky, Cathy! It's starting to get cloudy. W: I see it. I hope it doesn't rain. I thought it was going to be a fine day today. M: That's certainly what the department was hoping for when they chose today as the day for the annual picnic. W: You can't have a picnic without good weather. You need sunshine for all the eating and games and entertainment. M: Yeah, sunshine—but not too much! Do you remember last year? W: I sure do. It was so hot all we did was look for shade, look for ways to escape from the sun. M: And no one wanted to participate in any of the planned activities. All we wanted was cold drinks. And then dozed off. W: If there had just been the tiniest breeze to cool us off... M: But there wasn't. Just the burning sun, without a cloud in the sky, and the temperature just seemed to climb higher and higher. W: Well, we don't have that problem this year, apparently. Alan, did you hear the weather forecast? Is it supposed to rain? M: I don't know. I didn't catch the weather report. But maybe if it'rains, it will only be a short shower which cools thing off a little. That might not be bad. (20)