【題目】【2012北京】Today, computers are really helpful. They ____ everywhere.

A. use B. are used

C. used D. were used

【答案】B

【解析】

試題分析：根據(jù)語(yǔ)境可知此題考查的是一般現(xiàn)在時(shí)的被動(dòng)語(yǔ)態(tài)的基本構(gòu)成和用法。整個(gè)文句的含義是現(xiàn)在電腦非常有用，他們被應(yīng)用到各個(gè)領(lǐng)域，主語(yǔ)是they，電腦，是動(dòng)作的承受者，并且是習(xí)慣性的動(dòng)作，故用一般現(xiàn)在時(shí)的被動(dòng)語(yǔ)態(tài)。主語(yǔ)是復(fù)數(shù)故選B。

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