—The authors of computer viruses are geniuses.
—I agree. If they applied their wisdom to other net technology        human beings can benefit, it would be better.
A．in which B．through whichC．from whichD．during which
C
考查介詞與關(guān)系詞引導(dǎo)的定語從句。benefit from通過……獲利。因此，選擇C項(xiàng)。
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