听力原文:W: Hello, I'm Kate Simpson. I know Doctor, Wilson's out of town at a conference, but I was wondering...um...since she won't be back till next week, if you…if you could check in your computer records and find out how I did on her mid-term exam? M: I'm sorry, Miss Simpson But I'm not authorized to give out that kind of information. What's the probable relationship between the two speakers? (13)