【題目】Nearly a century later，extensive observations_______that elephants indeed remember injuries and hold hates against their abusers．

A．confirmedB．have confirmed

C．will confirmD．had confirmed

【答案】B

【解析】

“廣大觀察者近一個世紀以來認為…”從過去一直到現(xiàn)在，所以用現(xiàn)在完成時

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