If Newton lived today,he would be surprised by what_____in science and technology.
A．had discoveredB．had been discovered
C．has discoveredD．has been discovered
D
根據(jù)時(shí)間狀語today可判斷出要現(xiàn)在完成時(shí),表示已經(jīng)完成的動(dòng)作或存在的狀態(tài)。再根據(jù)what與discover的關(guān)系可確定用被動(dòng)語態(tài)。If Newton lived today是虛擬語氣,意為“如果牛頓活到今天”。在科技方面的發(fā)現(xiàn)指的是現(xiàn)在的發(fā)現(xiàn)。過去完成時(shí)表示一個(gè)動(dòng)作或狀態(tài)在過去某一時(shí)間或動(dòng)作之前已經(jīng)完成或結(jié)束,也可能是早已完成或結(jié)束,即“過去的過去”。
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