大全638

638. Several years ago the diet industry introduced a variety of appetite suppressants, but some of these drugs caused stomach disorders severe enough to have them banned by the Food and Drug Administration.

(A) stomach disorders severe enough to have them

(B) stomach disorders that were severe enough so they were

(C) stomach disorders of such severity so as to be

(D) such severe stomach disorders that they were

(E) such severe stomach disorders as to be

一是句意，明显they指some of these drugs ；二so...that...和such ...that...从句的主语代词首先指向主句的主语。

请问jnlvo，这条有语法依据吗？以前一直只记so...that...是不用考虑逻辑主语问题的，而so...as to...是要考虑的，所以没注意到你讲的这条规律，能不能详细讲讲啊？谢谢！