在一句话里，是否they和their必须指代同一对象？

在一句话里，是否they和their必须指代同一对象？-->新东方语法课上讲的，但在实际操作中，如og90，主语的their 和从句的they 指代的不是同一对象，不知道该怎么对待这一规则

Since 1986, when the Department of Labor began to allow investment officers’ fees to be based on how the funds they manage perform, several corporations began paying their investment advisers a small basic fee, with a contract promising higher fees if the managers perform well.

(A) investment officers’ fees to be based on how the funds they manage perform, several corporations began

(B) investment officers’ fees to be based on the performance of the funds they manage, several corporations began

(C) that fees of investment officers be based on how the funds they manage perform, several corporations have begun

(D) fees of investment officers to be based on the performance of the funds they manage, several corporations have begun（D）

(E) that investment officers’ fees be based on the performance of the funds they manage, several corporations began

记得置顶贴子里讨论过的，是GEMJ大牛的一个总结吧。总的来说在同一句子中物主代词和人称代词是可以指向不同的。

这是我的一点总结，供参考：

（一）  同一句中，人称代词和物主代词可以指代不同的东东；

OG230. In an effort to reduce their inventories, Italian vintners have cut prices; their wines have

been priced to sell, and they are.
(A) have been priced to sell, and they are
(B) are priced to sell, and they have
(C) are priced to sell, and they do
(D) are being priced to sell, and have
(E) had been priced to sell, and they have
ANSWER：C           their指酒商，they 指酒

OG60. According to a recent poll, owning and living in a freestanding house on its own land is still a

goal of a majority of young adults, like that of earlier generations.
A. like that of earlier generations
B. as that for earlier generations
C. just as earlier generations did
D. as have earlier generations
E. as it was of earlier generations
答案E.