LZM E11-36

shazhi

In large doses, analgesics that work in the brain as antagonists to certain chemicals have caused psychological disturbances in patients, which may limit their potential to relieve severe pain.

(D) an effect that may limit their potential to relieve
(E) an effect that may limit petential of such analgesics for relieving

Ans: D

why not E?

shazhi

请大牛跳出来指点一下吧！！！

gemj

字典上有a potential for violence
我想从a potential for violence到 a potential of sth for sth应该是很符合语法习惯的。

liu9903

我的意见：
1。D简介，their指待清楚。
2。potential to do/ potential for sth。无potential for doing的用法

shazhi

以下是引用liu9903在2003-9-3 0:22:00的发言：
我的意见：
1。D简介，their指待清楚。
2。potential to do/ potential for sth。无potential for doing的用法

谢谢！
但是，我觉得原句中 analgesics， antagonists， chemicals， disturbances， patients, 都是复数，their的指代应该是有歧意的啊？！

createdream

优先指代主句主语！