The number of smokers in China ________increased in recent years, and a number of them _________ the youth.
A．has; areB．have; areC．is; isD．a(chǎn)re; are
A

試題分析：句意：最近幾年，中國的吸煙的人的數(shù)量增加了，他們中的許多人都是年輕人。The number of…的數(shù)量，謂語動(dòng)詞用單數(shù)；a number of = many，許多的意思，謂語動(dòng)詞用復(fù)數(shù)，選A。
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