【題目】It is said in the book that Thomas Edison 1847-1931______ the world leading inventor for sixty years.

A.would beB.has beenC.had beenD.was

【答案】D

【解析】

考查動詞時態(tài)。句意:書里說,托馬斯·愛迪生是六十年來是世界領(lǐng)先的發(fā)明家。分析句子可知,根據(jù)括號內(nèi)的時間可判斷應使用一般過去時,陳述過去客觀事實,且沒有另一個過去的時間或動作與之比較,因此不能使用過去完成時。故選D

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