问E怎么不对了?
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
答案是 a,
e怎么不对了呢
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