A、Over US $100,000. B、About US $10,000. C、Over US $200,000. D、About US $50,000. B计算题。四个选项都是数字，显然问题是提问数字。此题需要计算且跨度较大，对话开头问了房主的要价，

W: Have a seat, Mr. Younger. What can I do for you?
M: [23] I have a house in Seattle. It’s about 400 sq. ft., including the house and the yard. I’m looking for somebody who will buy it in cash.
W: How much do you want to sell it for?
M: [23]/[25] Around half a million U.S. dollars.
W: Sounds reasonable.
M: I’d like to sell it as soon as possible for ready money.
W: I see. [23] Is the house under your name?
M: Yes. Here are the papers. I’ve also made copies of each of them. You can keep the copies.
W: Very well. Do you have a photo of the house with you?
M: Yes. Here they are. There’re six of them.
W: Did you bring the negatives as well?
M: Sure. Here you are.
W: This one is OK, but the others... [24] Well, I think I’ll have to send my men to take pictures of your house, pictures that are taken by a professional and are able to show the whole aspect of the house.
M: That’s fine with me. What is your charge for this service? ... Er, I don’t mean the pictures, I mean to be my agent.
W: [25] Well, 2% of the sale price of your house.