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【单选题】

22.Lawrence Craven, a doctor from the USA,is the author of several published reports, one of______ introduced the idea in 1953 ______aspirin could reduce the risk of heart attacks.

A.
them; when
B.
which; that
C.
what; that
D.
which; when
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参考答案:
参考解析:
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举一反三

【单选题】The TV programme has______on the children as______as the old.

A.
a good effect; good
B.
a positive effect; well
C.
a good affect; well
D.
affect; well