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M: Yes. The last thing we want is to cause inconvenience to the general public. Our quarrel is not with the general public, it is with the employers and the government.
Q: What does the man mean？
(19)
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Imagine eating everything delicious you want -with none of the fat. That would be great, wouldn't it？
New "fake fat" products appeared on stone shelves in the United States recently, but not everyone is happy about it. Makers of the products, which contain a compound called olestra, say food manufacturers can now eliminate fat from certain foods. Critics, however, say the new compound can rob the body of essential vitamins and nutrients (营养物) and can also cause unpleasant side effects in some people. So it's up to consumers to decide whether the new fat-free products taste good enough to keep eating.
Chemists discovered olestra in the late 1960s, when they were searching for a fat that could be digested by infants more easily. Instead of finding the desired fat, the researchers created a fat that can't be digested at all.
Normally, special chemicals in the intestines (肠) "grab" molecules of regular fat and break them down so they can be used by the body. A molecule of regular fat is made up of three molecules of substances called fatty acids.
The fatty acids are absorbed by the intestines and bring with them the essential vitamins A, D, E and K. When fat molecules are present in the intestines with any of those vitamins, the vitamins attach to the molecules and are carried into the bloodstream.
OIestra, which is made from six to eight molecules of fatty acids, is too large for the intestines to absorb. It just slides through the intestines without being broken down. Manufacturers say it's that ability to slide unchanged through the intestines that makes olestea so valuable as a fat substitute. It provides consumers with the taste of regular fat without any bad effects on the body. But critics say olestras can prevent vitamins A, D, E and K from being absorbed. It can also prevent the absorption of carotenoids (类胡萝卜素), compounds that may reduce the risk of cancer, heart disease, etc.
Manufacturers are adding vitamins A, D, E and K as well as carotenoids to their products now. Even so, some nutritionists are still concerned that people might eat unlimited amounts of food made with the fat substitute without worrying about how many calories they are consuming.
we learn from the passage that olestra is a substance that ______.
听力原文：W: Have you bought the mobile phone you've ever talked about with me？
M: I've found a good one for eighty dollars at the supermarket. But the next Sunday they will be on special for sixty-five dollars. I would save fifteen dollars if I wait.
Q: How much would the man pay if he bought now？
(16)
A．More market share.B．Job securityC．Increase of productionD．Higher profitability
听力原文：W: Morning, Mr. Park.
M: Come here, Miss Li, I have something to talk to you.
W: What's the problem, Mr. Park？
M: We need to define a new strategy which must be flexible enough to take account of changing market conditions.
W: I agree. Our main objective must be to gain market share, and to do this we must reduce prices.
M: So you are sure that if we reduce prices, our market share will increase？
W: Yes, I'm sure.
M: That might be true. But if we reduce our prices, our margins will be lower and that will cut our profits.
W: In short term it is right. But we can slowly increase our production and as the production is increased, we may cut unit cost.
M: That's really a log-term prospect. But I believe higher profitability is our objective. The better the products, the higher the price, and the higher price will enhance higher profits.
W: The market is already very competitive. And if we raise our prices, whatever the quality, sales will drop rapidly.
M: Then shall we look at it from the other viewpoint--manufacturing. Well, if we can reduce cost in manufacturing that must put us in a strong position to adapt to the market. The only way for us is to sub-contract more of the production.
W: That will mean job losses if we do that.
M: That's true. But the jobs that remain will be more secure.
W: It sounds reasonable. Maybe we can try this way.
M: That's the best we can do, don't you agree？
(23)
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