单项选择题

From the fourth paragraph we learn that ______.

A．heart attacks are more likely caused by alcohol than stroke
B．moderate drinking, discourage blood platelets from clotting
C．boosting the levels of good cholesterol can lead to heart attacks
D．moderate drinking protect people by making the blood cell clump
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单项选择题
Which of the following statements is TRUE about the effect of drinking against strokes
A．Moderate drinking protects against heart attacks and strokes in different ways.
B．Even heavy drinkers suffer less chance of a stroke than non-drinkers.
C．Alcohol works only on patients who suffer clot-type strokes to protect them.
D．White people are more likely to benefit from moderate drinking than nonwhites.
单项选择题
According to Dr. Sacco, ______.
A．different wines work differently on drinkers at stroke risk
B．non-drinkers should also consume a moderate amount of alcohol
C．drinkers should keep to one kind of alcohol to ward off strokes
D．moderate alcohol consumption protects against strokes
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