题目内容
A．It is rather expensive.B．It cannot provide enough hot water.C．It cannot be used for
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听力原文：W: Is there anything else we ought to discuss？
M: We haven't discussed heating yet. Do you like central heating？
W: Yes, but isn't it rather expensive？ First costs, I mean--the furnace, and the boiler, all the pipes and radiators？
M: That depends on the system. An automatically controlled oil-burning system is rather expensive.
W: Electric fires are no cheaper. We have them in the bedrooms, and the electricity bills are always high at the end of the winter.
M: What about open fires？
W: I like to see a fire. But coal fires do make a lot of work and a lot of dust, too.
M: You may have a furnace in the kitchen, and a storage tank upstairs. A furnace that bums coke is much cheaper than one that bums oil. A good one would give you all the hot water you need for the kitchen and for baths, and enough for two radiators in the living room.
W: Oh, I know what you mean. They have to be filled twice a day, don't they？
M: Yes, and you have to clear out the ashes once a day.
W: How much does coke cost？
M: They bum three or four tons a year. I'm not sure how much coke costs now--about ￡ 20 a ton, perhaps.
W: That's t ￡11.25 or more a week--for all the hot water, and for heating the living room in winter. That's cheaper than any other system I know.
M: And very little work, too.
W: Great, let's do it.
(20)
听力原文：W: Did you see the tears of laughter on the faces of everyone in the theater？
M: Yes, it was really a success even though some of the plot was too unrealistic to believe.
Q: What are the speakers discussing？
(17)
听力原文： Most reliable companies pay close attention to customers' mails, particularly from dissatisfied customers. But writing letters to a company is one thing; getting the company to do what you want is another. And it requires a certain amount of know-how to persuade a manufacturer to repair your broken toaster or to make an adjustment on your mishandled airplane reservation.
First, you must observe certain principles. The most important is that you must deal with a reliable company. If you buy something from a fly-by-night retailer, you have to accept the fact that you have thrown away your money.
Second, if the product carries a warranty, be sure that you understand its terms. The warranty is an insurance policy, and the customer pays for that insurance when he pays for the product. If a product becomes defective a few weeks after the warranty has run out, some companies may make the adjustment, only for the sake of good will.
Third, let the company know in no uncertain terms that you are disgusted with its product or service, more often than not, customers who write in anger sometimes forget to include important information that the company needs in order to correct the situation. If that information is lacking, all the anger in the letter will get you nowhere. On the other hand, a simple, calm, factual and reasoned letter can usually help you to achieve the desired end.
(23)
A．The company may make some adjustment for the sake of good will.B．The company may not
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