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听力原文:W: Good morning. This is Dr. Anderson's Office. May I help you? M: Good morning. I'm Johnson. My friend recommended Dr. Anderson to me. I'd like to make an appointment with him to have my teeth checked. W: I can arrange for you to see the doctor two days from now. M: Can't I come in tomorrow? W: I'm afraid Dr. Anderson won't be able to see you then. He has a full schedule for the next couple of days. M: Two days later? But... you see, my teeth...I can't bear them. W: Yes, I see. Please wait a moment. I'll call the doctor. (After a minute.) W: You're so lucky. The doctor asks you to come here at around 8:30 tomorrow morning. Will that be all right? M: Well, yes. But what time is the clinic open? W: We start from 9:00 a.m. and close at 5:00 p.m. on weekdays. The doctor will look at your teeth before work. M: Thanks. I'll come here at 8:30 tomorrow morning. Goodbye. W: Goodbye! 8. Who is Mr. Johnson? (8)