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 The best choice, A, offers an adjective phrase unequivocally modifying policy and exhibiting grammatical parallelism (decreasing ... and improving). In choice B, the gerund the decreasing is not grammatically parallel with the infinitive to improve. Likewise, in C and D, the decreasing of... costs is not parallel with improving the efficiency(动词和名词不能并列). |