题目内容
A．The history of background music.B．The function of background music.C．The way backgro
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听力原文：W: Oh, it is terrible! Abroad Aero lines Argentina's flight 386. 386 passengers were given prepared food on their way (20)from Buenos Aires to Los Angeles.
M: Then what happened？
W:A few days after arriving in Los Angeles. (19)one passenger died, and 74 others were seriously ill.
M: What is the reason for that？
W: According to Dr. Phillips, it was the highest single outbreak of cholera in the United States this century, and the airline passengers were the victims of this new epidemic of cholera, a disease not seen in Latin America since 1895. they were just a few of the more than one million people affected in the 20th centuries, including at least 10,000 who died in the following three years after 1991.
M: (19)Cholera？ To the best of my understanding, that disease has been dead for some time now.
W: (19)But it has come back. Dr. Phillips says that cholera is by no means the only old infections on the comeback, and it is just one of the major infections that are fighting back fiercely against man's attempts to control them.
M: (19)But what are the reasons for the comeback of so many dead diseases？
W: Phillips says a single reason can't explain why a new disease appears or an old one returns, and usually a combination of factors are involved.
M: What kind of specific factors？
W: In his book Plagues on Our Doorstep Dr. Phillips presents some reasons.
M: What are they？
W: First, (21) international travel and commerce. The cholera abroad flight 386 and mosquitoes living in imported tries are examples of these. Second, (21) technology and industry. For example, the technology in Britain's processing industry was a likely contributor to the emergence of mad cow disease. Third, (21)the breakdown of public health measures. Declining health resources have resulted in the erosion of once highly-valued health service.
M: Well, that's just unbelievable!
(20)
听力原文：W: What are you working now？
M: (19)I've just finished a piece of background music.
W: Background music？
M: Yes. (21)It’s supposed to influence your attitude, put you in the right mood.
W: I'm not sure I like that idea.
M: It seems to work. Factories use it a lot. (20) It makes the workers happy and work better that way. In one factory, music increased production 4.5%.
W: I think they'd get tired of hearing music all day.
M: They don't. If the music stops, somebody always runs to the telephone to complain.
W: I can't remember when there wasn't background music.
M: Actually, it started during WWII when some factories had their own orchestras to keep workers happy and calm. Now the music is piped in by a machine, and different kinds of music are played at different times during the day. They play faster music at ten in the morning than at eight, because workers tend to be slower then.
W: What about restaurants？ Do they play the same music for dinner or lunch？
M: I don't know. But I know hamburger places play fast music because they found a customer spent only seventeen minutes eating. The time was twenty-two minutes before that.
W: (22)80 they have more people coming in and out to buy hamburgers.
M: Exactly. (21)And that's good for business. You can see why music has become so popular.
W: There's still something about it that I don't quite like.
M: I know what you mean, but lots of people would not agree with you. Companies pay millions of dollars every year for background music. Prisons use it, and farmers use it to keep their cattle calm. It's even supposed to have an effect on plants.
(23)
听力原文：M: If you are trying to fit this bookcase in here, you'll have to turn your bed sideways.
W: I guess you are right. But I hate to lose the view I have from my window.
Q: What can we learn from the conversation？
(17)
A．Buenos Airs.B．New York.C．San Francisco.D．New Orleans.
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