听力原文：M: Hello, Professor Ward speaking. W: Hello. My name is Ann Smith. I'd like to get into your course on herbal plants. M: I'm sorry, there are already too many students in that class. W: Oh, it's a pity to hear that. But I really want to hear your lecture. M: You can learn it the same time next year. W: But I'm a student from another University, and I'll be here only 2 semesters. So if I couldn't register it this time, I'll miss it. M: I see. W: And the course isn't offered at my school and I think it would be interesting. M: Have you studied much about botany? It's very difficult, you know. W: Yes, I am majoring in biology and I've also done some economic botany on my own. M: Well. I'll do my best. Why don’t you come to my office next week? I'll be in all day Wednesday. I can tell you more about the class and the other courses here. W: Thanks a lot. M: In any case, you'll have to see Professor Chambers to get his approval. If all else fails you can register for my courses in the spring. We cover many of the same topics then. W: I'll be in Wednesday. Good-bye. (23)