问题
选择题
—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
答案
答案：C
考查介词与关系词引导的定语从句。benefit from通过……获利。因此，选择C项。