------ The authors of computer viruses are geniuses.
------ I agree. They can apply their wisdom to other net technology ________ human beings can benefit.
A．in whichB．through whichC．on whichD．from which
D
考查定語從句。先行詞為other net technology，短語：從什么當(dāng)中獲益benefit from,所以用from which，which 指前面的先行詞，故選D。
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