【答案解析】[听力原文] 62-64 M: Hi, this is Sud Frenzy. I need to reschedule my appointment with Dr. Richman. W: What time is your appointment scheduled for, and when would you like to reschedule it for? M: My original appointment is at 4 o'clock this afternoon. Do you still have an opening at 9:00 a.m. Monday morning? Otherwise what about tomorrow? W: The Monday slot is still available, so I'll pencil you in for it. OK, that's 9:00 a.m. Monday with Dr. Richman for teeth cleaning and a checkup.