求助：GWD-4

Q4:

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.

支持选D, 我认为the price of what ....中的录what 是个明词丛句做 price 的定语,不知是否可以这样理解.

上新东方时老师总结的表达倍数的方式：

1.倍数 + as + adj. + as

2.倍数 + adjer. + than

3.倍数 + that/those + of

4.倍数 + n.(比较的方面)+ of

我想此题正好套用第4种方式， 并且 what = the thing that

http://forum.chasedream.com/dispbbs.asp?boardID=23&ID=53545&page=1

I chose C.

Can u specify what "the thing" refers to?

sb charges some money for sth

这个题里只有that可以替换some money