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
考查時(shí)態(tài)。這里If Newton lived today 是一個(gè)虛擬條件從句，對(duì)后面主句的時(shí)間段沒影響he would be surprised by what___ in science and technology 這個(gè)句子中，主語是what has discovered in science and technology, 這里的discover是延續(xù)到今的，至今為止所發(fā)現(xiàn)的科學(xué)技術(shù)，故選D。
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