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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单项选择题

It can be inferred from the last paragraph that ______.

A．some NBAC members hesitate to ban human cloning completely
B．a law banning human cloning is to be passed in no time
C．privately funded researchers will respond positively to NBAC’s appeal
D．the issue of human cloning will soon be settled

单项选择题

We can learn from the first paragraph that ______.

A．federal funds have been used in a project to clone humans
B．the White House responded strongly to the news of cloning
C．NBAC was authorized to control the misuse of cloning technique
D．the White House has got the panel’s recommendations on cloning