Question

—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 which

C．from which

D．during which

Answer 1

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。