求高人解一道GWD的题目！！急！

zyjing

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.

A.as

B.than

C.that

D.of what

E.at which

答案是C，但是我选了D··倍数的表达不是three time the price of``吗··为什么是that？

毛毛carina

per milligram是插入语， the drug’s maker charges for another product with the same active ingredient是price的定语从句，that是引导词~~

zyjing

per milligram是插入语， the drug’s maker charges for another product with the same active ingredient是price的定语从句，that是引导词~~

-- by 会员 毛毛carina (2011/2/19 14:38:57)

哦哦~谢谢毛毛~

vrtjtrj

加了逗号的定语从句，不是只能用WHICH吗？

zyjing

加了逗号的定语从句，不是只能用WHICH吗？

-- by 会员 vrtjtrj (2011/3/1 16:59:09)

这个是限制性定语从句只不过是加了插入语吧`~不是非限制性定语从句啊~