题目内容
（请给出正确答案）
He found it necessary for us ______ from each other.
A．to help and learn
B．helping and learning
C．to learn and help
D．learning and helping
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A．Sounds good!
B．Very well.
C．How nice !
D．All right.
A．They would think that is really wonderful.
B．They would not be used to it.
C．They would think that it is more terrible than a noisy city.
D．They would be glad to have such a quiet place for a good sleep.
To test the idea, twelve university students offered their help to medical science and sat down to a meal washed down with three large glasses of Bordeaux. Four hours later, the scientists found that the red wine was still at work in their veins providing significant protection against the effects of cholesterol (胆固醇).
Simon Maxwell is careful not to recommend wine drinking for health reasons, because of the other undesirable effects of alcohol. He hopes that tile research may enable scientists to isolate the elements which have good effects so that they can be provided, perhaps as tablets, with no damaging effect on the liver or brain.
The news is not so good for those who prefer other drinks. White wine is only five to ten times as effective as blood in resisting oxidization and beer is even less effective.
It was the fact that French eat as much cholesterol as the British but have a quarter of the amounts of heart disease which made the research.
Which drink is the least effective to provide antioxidant protection？
A．White wine.
B．Beer.
C．The mixture of beer and red wine.
D．Red wine.
A．Because wine makes the effect of cholesterol stronger.
B．Because wine provides oxidant protection.
C．Because wine has bad effect on both the liver and brain.
D．Because wine carries away the nutrition people need.
The coins of every country are difficult to learn at first. American coins are represented by the cent sign. Also the size of American coins do not show the value. For example, the 10-cent coin is much smaller than the 5-cent coin, although it is worth twice as much. All United States coins are silver colored, except for the" penny" (one-cent piece), which is a brown coin. Here are more details about American coins.
Why are American bills or paper money unlike that in many other countries？
A．American bills are not the same color.
B．American bills are the same size and color.
C．American bills are the same color but different size.
A．any well
B．any better
C．quite good
D．quite better
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