听力原文：M: Good morning, Mr. John's office. W: Good morning. May I speak to Mr. Johnson? M: Speaking. What can I do for you? W: Well, I noticed your want ad in the paper yesterday. M: You mean about my Mercedes? W: That's right. I noticed it's a 89 and wondered about its condition. M: Well, it's in great shape. I've been the only driver, and all maintenance has been done according to the dates specified in the service manual. W: The ad said it has air conditioning, power brakes, power steering, automatic transmission and a convertible top. M: That's right. I forget to add that the tires and battery are all new, too. It has comprehensive insurance, with coverage for another six months. W: Do you mind my asking why you're selling the car? M: Oh, my company is transferring me to France next month, I plan to buy a new one over there. W: I see. But I noticed you didn't mention any price in the ad. M: We can negotiate that if you'd like to come see it. W: That sounds reasonable. I'd like to see the car first. Where do you live? M: My home address is 235 the 8th Avenue. I'll be home all evening. Come any time alter 6:30. W: All right. I'll be there around 7. M: Fine. See you then. W: Goodbye. ?Yon will hear Mr. Johnson talking about his car. ?For each question 23-30,mark one letter (A, B or C) for the correct answer. ?After you have listened once, replay the recording. After the conversation, what does the woman still not know?