听力原文：W: Good morning, Chuck, are you also here waiting for Professor Johnson? M: Oh, yes. Good morning, Lori. The professor asked me to come for an interview. Do you know about the job working as a teacher's assistant? W: Oh, yes. I know all about it as I myself did it last year. M: Really? How did you like it? W: Well, actually I think it was the best I have ever had at school. It paid nine dollars an hour, which was three dollars more than the school post office paid us. M: Yeah, that is a good salary. What did you do? W: My resposibility was to help Mr. Johnson grade the students' homework. It wasn't hard and the professor was always available if there were any questions. M: I think I would enjoy such kind of work. And it would be very good working experience. W: Absolutely. You can also learn how to use computer databases. That's a good preparation for lots of jobs. M: You're right. But I'm a little worried about how much time it might take? W: It's pretty reasonable. Only about five or six hours a week. And you can do that in your room. M: It sounds great. W: Good luck with your interview then. (23)