【題目】According to a UN report, people ________ goodbye to 52% of the world’s animals in the past 40 years.

A.saidB.have saidC.were sayingD.had said

【答案】B

【解析】

本題考查時(shí)態(tài)。解題步驟:1.確定時(shí)態(tài):in the past 40 years作時(shí)間狀語(yǔ)時(shí),主句謂語(yǔ)動(dòng)詞要求使用現(xiàn)在完成時(shí);2.確定句意:根據(jù)一份聯(lián)合國(guó)的報(bào)告,在過(guò)去的40年中,人們已經(jīng)和世界上52%的動(dòng)物告別了。故選B。

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