Question

In the Olympic Games all athletes should play fair ________ the rules, but some often take drugs to accomplish their aims.

A．with

B．for

C．against

D．by

Answer 1

D

考查介词辨析。By the rules意为按规则。
句意为在奥林匹克运动会中，所有的运动员都要按比赛规则比赛，但是有的人经常服药来实现他们的目标。