听力原文：W: I want to register for this mathematics course. M: I'm sorry registration has closed. W: Closed? The clerk told me I could come back and register any time during the first week of classes. M: Well, that's not possible. The computer's official student account has already been sent to the state. And that's what our budget is best on. Who told you that anyway? W: Some woman here when I tried to register three weeks ago. She said I just had to pay a late fee. M: She must have been a temporary worker. They don't have much training. Why didn't you register then? W: She said I couldn't until I had my birth certificate. Here it is. M: Your birth certificate? W: Well, I'm a new part-time student. So she ask for identification. I don't drive so I don't have a driver's license. M: Huh. That's no reason to demand a birth certificate. We only need to establish residency: a phone bill with your name and address on it would've been fine. W: Really? Only prove of my address? M: Yes. I'm afraid she gave you the wrong information. Still you'll have to wait and take your math's class next semester. W: But that's no fair. M: Well, I sympathize with your problem, but frankly, I don't think there is anything any- one can do for you. You were trapped in the system. If you want to you can talk in the director. She will help you if she can. W: Great. M: Don't get your hopes up. What problem does the woman halve?