听力原文：W: Hello, Dr. Christianson. M: Hello, Cathy, what can I do for you? W: Well, [22] I need an extension for my report on whales. Next Wednesday I am supposed to present in class and hand my report in, but I won't be ready. M: You had six weeks to work on this, and [23] I have a policy of penalizing heavily for late assignments. You lose 20% the first day, and 10% for each day after. W: Well, my computer broke down and I lost everything. I have taken the computer into the Campus Computer Center but they cannot retrieve any of my files. M: [24] 1 can sympathize with the computer issue, because it happened to me once when I was a student. My computer crashed just as I was on the last page of a 10,000-word essay. I assume this will be a lesson to you. W: Oh yes. M: Well, let's look at the calendar and see if there is another opportunity for your presentation and report. W: What about on November 29? M: Let me see, no, that wouldn't work as Jane Clark is doing her presentation that day. W: I'm not sure I can get it finished much sooner as I have to start writing the report from scratch. M: Well, perhaps I can allow you to hand in your report on November 29, but the presentation must be sooner. Looking at my calendar, the only possible day would be November 22. [25] Rob Metcalf was supposed to present that day but I understand he was in a serious car accident and had to withdraw from university. W: I didn't know that. M: So, we have arranged for you to present on November 22, and hand in your report on November 29. W: Thanks again, Dr. Christianson. (23)