【題目】Wang Xuan is a famous computer scientist. He his research of laser typesetting in 1975.

A.startB.startedC.isstartingD.willstart

【答案】B

【解析】

句意:王選是一位著名的計(jì)算機(jī)科學(xué)家。他在1975年就開(kāi)始了激光照排的科學(xué)研究。

考查一般過(guò)去時(shí)。start一般現(xiàn)在時(shí);started一般過(guò)去時(shí);is starting現(xiàn)在進(jìn)行時(shí);will start一般將來(lái)時(shí)。分析句子可知,句中時(shí)間狀語(yǔ)是“in 1975”,表示一般過(guò)去時(shí),所以空格處填started。故選B。

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