听力原文:W: Excuse me. I'd like to make a complaint. M: Really? What seems to be the problem? W: Well, don't you think you are playing the music too loudly? M: Oh? I'm sorry. I didn't realize it was so loud. W: Yes. I am preparing for my exam next week and your music is bothering me a great deal that I can't hear myself think. M: Sorry. I'll turn it down. What do we learn from this conversation?