212. The Baldrick Manufacturing Company has for several years followed a policy aimed at decreasing operating costs and improving the efficiency of its distribution system. (A) aimed at decreasing operating costs and improving (B) aimed at the decreasing of operating costs and to improve (C) aiming at the decreasing of operating costs and improving (D) the aim of which is the decreasing of operating costs and improving (E) with the aim to decrease operating costs and to improve
偶觉得,其实有时候大家都被og的解释误导,本来这道题考得就是has done 这种用法for
several years followed a policy主要充当时间状语从句,句子采用完成时态,其他的都是陷阱。 |