听力原文：W: Hello, Professor Dannis, my name is Anna Adams. I read in the university newspaper that you were looking for a student to work as a language laboratory assistant? M: Yes, we are. Are you interested in the job? W: I think so, but before I apply, I'd like you to tell me more about the work. M: Have you worked with tape recorders before? W: I used cassette a lot when I was studying French in high school. M: Good. There are many different kinds of language labs, ours is a small one, and it's fairly easy to operate. This is the main control panel, you can set the controls to a lot of students to listen to the lessons they want to hear. If you decide to take the job, I'll explain how the system operates. Most of the lessons are on cassette tapes but some of them are also on long reel tapes of records. The cassettes are kept in order on these shelves, and they are clearly numbered with the language and the lesson number. For example, the cassettes in the green boxes are French lessons. Records and tapes are over there. W: How much hours would I work? M: We need someone ten hours a week, Monday through Friday from 4 p.m. to 6 p.m. This is one of the busiest times for this laboratory. W: I'11 fill out an application for this job right now. It would fit into my schedule nicely. M: Fine, I'll get back to you in a week or so after we review the applications. (20)