og 1 (10th) vs og 51 (11th)关于有when的句子中代词指代的问题

好吧！这么说可能太抽象了。终于找到了两个例子。

og 10th N1

1. The Wallerstein study indicates that even after a decade young men and women still experience some of the effects of a divorce occurring when a child.
A. occurring when a child
B. occurring when children
C. that occurred when a child
D. that occurred when they were children
E. that has occurred as each was a child

Choice D is best. The phrasing a divorce that occurred when they were children correctly uses the relative clause that occurred to modify a divorce and includes a pronoun and verb (they were) that refer unambiguously to their antecedent, men and women. Choice A incorrectly introduces the when... phrase with occurring, thus illogically making divorce the grammatical referent of when a child; furthermore, the singular child does not agree with the plural men and women. B replaces child with children but otherwise fails to correct A's errors of structure and logic, and C corrects only the error created by occurring. Choice E includes an incorrect verb tense (has occurred) and wrongly replaces when with as. Also, each was does not properly refer to men and women.

也就是说：Young men and women still experience (some of) the effects (of a divorce) that occurred when they were children.中 "they" unambiguously refers to "young men and women".

[我觉得some of the effects of a divorce 中的中心词是the effects 所以就用加黄亮出来了。]

在og 11th No. 51中

The Olympics Games helped to keep peace among the pugnacious states of the Greek (world in that a sacred truce was proclaimed during the festival's month.)

C> world when they proclaimed a sacred truce for the festival month

D> world, for a sacred truce was proclaimed during the month of the festival

中og 对选项c的评价为：

"they" is ambiguous, possibly referring to either " the states" or "the Games".

也就是说... The O Games helped to keep peace among the pugnacious states of the Greek world when they...

中的they指代有歧义？

我的问题是：为什么在og1中是没有起义的呢？

难道是须借助逻辑语意来区分：如果出现 noun phrase 1 ... noun phrase 2, when they,只要能从逻辑句意中明显看出they 的指代对象，就ok吗？

请指教！