og212的两个没人问过的问题

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

答案A。大全中的解释：The best choice, A, offers an adjective phrase  (aimed at 是形容词短语，不是动词过去分词)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. In E, the infinitives to decrease and to improve, while parallel, are less idiomatic than the prepositional phrase of decreasing... and improving in modifying the noun aim. Also, with the aim... improve can easily be construed as referring to the Baldrick Manufacturing Company and so does not refer unequivocally to policy.

我有两个问题：

1。为什么aimed at 是形容词短语，不是动词过去分词？？

2。解释中没提C的aiming，请问C的aiming有没有问题？可不可以policy主动aiming？？

1.aimed at前应该是省略了that is, 是对policy的形容和定义. offers an adjective phrase 是说它的作用并不是指它是形容词短语

2.aiming有问题, 因为它是主动语态, 而policy是不可以主动aim, 而是制定policy的人去aim, 所以应该用被动语态.