听力原文：M: Professor Day, may I see you for a minute？
W: Sure. Come on in. What's the matter？
M: I've got a problem. I need your technical writing class, so I went early to the registration area, but by the time I got to the front of the line, it was closed. See, my advisor signed my course request and everything.
W: That's a big class already. If it is closed, that means I have 50 students in it now.
M: I'm not surprised. It's a really good class and many students want to attend it.
W: Can't you take it next year？ We offer it every fall.
M: Well, that's the problem, I'm supposed to be graduating this spring. But, of course, I can't graduate without your class.
W: I see. In that case, I'll sign for you. It looks like there will be 51. Take this form. back to the registration area. They will get you in.
M: Thanks, Professor Day. I really appreciate this!
23. What is the problem of the student？
24.What do we know about this course？
25.What does Professor Day decide to do？
(20)

A. He cannot do well because the class is too large.
B. He wants the professor to give him a mark.
C. He was late for registration.
D. He needs the permission of Professor Day to register.