24. 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(D) (E) such severe stomach disorders as to be
答案是D 请问A改成severe enough to be行不行呀?另外C里的so as to的主语也是 some of these drugs,但是就是读起来不爽,请问到底有什么问题呀,
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