质疑og67题答案！请指教！

67. Congress is debating a bill requiring certain employers provide workers with unpaid leave so as to care for sick or newbom children.

(A)  provide workers with unpaid leave so as to

(B)  to provide workers with unpaid leave so as to

(C)  provide workers with unpaid leave in order that they

(D)  to provide workers with unpaid leave so that they can

(E)   provide workers with unpaid leave and

我的问题是，为什么在答案D中，"so that they can" 里的 they 没用代词指代不清的问题。我觉得在语法上和意义上，they 都可以指代"employers" and "workers". 所以我觉得D不好。

最主要的是so as to的前后逻辑主语必须保持一致。

care for sick or newbom children的主语应该是workers，而provide的主语是employers

前后主语不一致，只能用so that

应该是so ...as to的前后逻辑主语必须保持一致  and  只能用于简单句。

is "so as to" seem as it too?

答案是比较除来的.除了d都有致命的错误.而d虽然they可能有歧异,但是5个选项中最好的.

关于代词指代,建议不要当作最先排除原则,因为从og中就可以看出,ets自己一会觉得代词指代有歧异,一会又没有歧异就象这题.

根据白勇,代词优先指代主语中心词,然后宾语中心词,最后是修饰语中心词