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    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
    考查时态。这里If Newton lived today 是一个虚拟条件从句，对后面主句的时间段没影响he would be surprised by what___ in science and technology 这个句子中，主语是what has discovered in science and technology, 这里的discover是延续到今的，至今为止所发现的科学技术，故选D。
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