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标题: nn们请看道题：gwd-4-4-->wycg转移 [打印本页]

作者: prfdu2005 时间: 2006-9-5 22:16
标题: nn们请看道题：gwd-4-4-->wycg转移

A new hair-growing drug is being sold for
three times the price, per milligram, as the drug’s maker charges for
another product with the same active ingredient.

as
than
that
of what

E.at which
答案是d, 可我认为是e, 因为price为后面句子的主语，而后面用到charge for sth at some price. at which 提前，则为e 阿。哪位好心nn可以帮我解答一下？

作者: prfdu2005 时间: 2006-9-5 22:22
不好意思，斑斑，发错地儿了

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