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题库 / Prep2007E2-SC-128
A Food and Drug Administration rule implemented in December 2000 mandates that any new drug that they intend to be used both by adults and children must undergo pediatric study and that its manufacturers list children's doses on the label.
drug that they intend to be used both by adults and children must
drug whose intended use is for adults and children as well
drug intended for use by both adults and children
drug, if they intend that it be used by adults and also children, must
drug, if intended for use both by adults and children, must
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是修饰drug而不是undergo，所以是做定语而不是状语，排除D, E。
那ABC是怎么判断的呢？
好问题。分析一下B的定语从句的成分。这个成分是：
drug‘s use is for adults.
这是个主系表结构。在逻辑上，我们只能说，这个药是给成年人和小孩用的，不能说“这个药的用途是对于成年人和小孩的”。
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