The number of smokers in China ________ decreased in recent years.
A．hasB．haveC．isD．a(chǎn)re
A

試題分析：考查主謂一致：句意：中國抽煙人的數(shù)量在最近幾年一直在減少。主語是the number of+名詞復數(shù)“…的數(shù)量”，謂語用單數(shù)，時間是recent years和現(xiàn)在完成時連用。選A。
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