读了一些精华贴子, 关于with的总结, 有些问题想问:
OG141. Unlike transplants between identical twins, whose genetic endowment is the same, all patients receiving hearts or other organs must take antirejection drugs for the rest of their lives.
(A) Unlike transplants between identical twins, whose genetic endowment is the same
(B) Besides transplants involving identical twins with the same genetic endowment
(C) Unless the transplant involves identical twins who have the same genetic endowment
(D) Aside from a transplant between identical twins with the same genetic endowment（C）
(E) Other than transplants between identical twins, whose genetic endowment is the same
这里的with作为你一个限制性修饰, 修饰twins
OG212. 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（A）
(E) with the aim to decrease operating costs and to improve
而这里的with却作为介词短语, 所以有歧义: 不知修饰前面的policy还是修饰主句的谓语.
我的问题是这两个with都放在句末, 都跟的是名词, 为何一个被看成是限定性修饰, 修饰紧跟前面的名词, 而另一个却有歧义? | 
