The number of the people who own cars ______since 1990.
A．is increasedB．a(chǎn)re increased
C．have been increasingD．has been increasing
D

試題分析：考查主謂一致和時(shí)態(tài)；本題的主語是the number of…指…的數(shù)量。定語從句who own cars修飾the people。本句的主語是the number of…指…的數(shù)量；該短語做主語時(shí)，謂語動(dòng)詞用單數(shù)。根據(jù)since說明本句使用完成時(shí)。句意：自從1990以來擁有汽車的人的數(shù)量一直都在增加。故D正確。
點(diǎn)評：本題考查了number兩個(gè)短語。The number of…做主語，謂語動(dòng)詞用單數(shù)；a number of做主語,謂語動(dòng)詞用復(fù)數(shù)形式。
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