【正确答案】
B
【答案解析】[听力原文] A: Are you the cafeteria manager? B: Yes. A: Oh, you're just the person I want to see. B: Yes, I heard you wanted to talk to me about the snack bar. A: That's right. I live in the dormitory next door, and for the past month, some of my friends and I have tried to buy things from your snack bar late in the evening, but it usually closes at 10:00. We want it to stay open much later. B: Well, we've already extended the snack bar hours to 10:00 p.m. Last year, we closed at 9:00. A: I know, and I appreciate the extended hours. But, you're unaware that many students, especially those from the dormitory, like to hang out in the cafeteria in the evening to take a break, do homework, work on group projects, or to study. There's usually a steady flow of traffic there until late in the evening, especially during exam week. It would be very convenient if you stayed open until midnight. Late at night, students don't always feel like walking ten minutes to the nearest convenient store. And during exam week, we're too busy to go for a walk late at night. B: Well, I understand your situation. But we need to close by ten o'clock so that the cleaning staff can come in and clean the snack bar and surrounding area. Our custodians finish work at 10:30, and therefore, there's nobody to clean the snack bar after 10:30. If the students working at the snack bar leave at 11:00 or later, there's nobody to clean up after them. It takes about 30 minutes to clean the grill and cookers. A: Well, why don't you ask the snack bar staff to clean up? B: I'd like to, but we usually only employ them to serve in the snack bar rather than to do cleaning work. Also, the custodians are unionized, and there's a clause in the collective bargaining agreement that prevents other people from doing their work. A: Well, why don't you just extend the hours until 12:00 but not allow any cooking after 10:00? Just sell packaged goods after 10:00. B: Well... I don't know. Hmm... I don't really know what to say. A: Well, I started a petition. Let me show it to you... Here it is... I've already got over 100 signatures from students. Many of them live in the dormitory, and I think I can get more. B: Oh my goodness! Well, in that case, I don't think we need to have a big debate over this. When are the midterm exams? A: They start on October 22. B: All right, I'll ask the snack bar staff to keep it open until 12:00 from October 22 to October 27. A: That would be good, but we'd appreciate if you could start doing it on Sunday, October 21, the evening before the exams begin. B: Okay, we'll keep it open until 12:00 for a full week. If everything goes well, or, uh, rather, I should say, if there are no complaints, we can do it again during exam week. A: We would appreciate that. When did the snack bar close every day last year?