还请NN们指导下这一题:OG10-212

savageprince · 发表于 2007-4-24 13:31:00

The company has for several yeas followed a policy aimed at decrasing operation cost and improving the efficiency of its distribution system.

请问: policy和aime的逻辑关系应该是主动的，为什么这里aim用了ed形式而不是aiming呢?

同时，有一个选项是with the aim to decrease operating cost and to improve, 为什么不能选?..

merci~

savageprince · 发表于 2007-4-24 14:30:00

帮自己顶一下~

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