我觉得应该选C, that.
如果选D "of what"的话,句子就成了:three times price of what they charge for another drug.
what从句在这里指的是另一种药的price,如果你用what,句子就成了 three times price of price.
所以用of what是一种重复。
美国人脱口而出的在GMAT里不一定是对的,不然就不会有老美考不到550了。
举报
e charge at 为何不对..?
没人回答阿。。。个么顶下先。。
charge sb an amount of money for sth
If you charge someone an amount of money, you ask them to pay that amount for something that you have sold to them or done for them.
The architect charged us a fee of seven hundred dollar.
The doctor charged every patient for aspirin.
coliins词典上的解释和例句
先谢谢14 15L
我也知道是charge for sth. 但这里应该是 charge at ..(价钱)吧
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