【題目】It is known to all that _______ you exercise regularly, you won’t keep good health.

A. unlessB. wheneverC. althoughD. if

【答案】A

【解析】

考查連詞。句意：眾所周知，除非你經(jīng)常運(yùn)動，要不然你不會健康。A. unless除非；B. whenever無論何時；C. although盡管；D. if如果；是否。根據(jù)語境，表示“除非”，故選A。

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