听力原文：A: 8734059. B: May I speak to Thomas Nelson? A: This is Thomas speaking. May I ask who's calling? B: This is Lee Ting, the secretary at the Dean' Office. A: Hi, Miss Lee, what's up? B: I'm calling to inform. you about some changes in our arrangement for your seminar next week. A: Yes, what are the changes? B: The first change is that the seminar will be moved to the law school Auditorium. The time will be 3:00 pm on Monday. A: Ok, seminar, 3:00 pm Monday. What else? B: I want to know if you have any special needs for facilities for your presentation? A: Well, I need a PowerPoint projector or an overhead projector. B: OK, overhead projector, or PowerPoint projector. What about the audio equipment? Do you want me to arrange a wireless microphone for you? A: Well, I think a microphone on the podium will do. I don't move too far from the podium when I make a presentation. B: Sure, we'll put a microphone on the podium. Oh! And finally, the field visit has been cancelled owing to your time constraints. A: That's too bad. I was really looking forward to visiting the experiment facility. B: In that case, should I tell the Dean that you had really hoped to see the lab? A: It'd be very kind of you if you would let him know. B: Sure, I'll let him know as soon as he returns to the office. (20)