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看了以前的讨论，在A、C、D、E之间还是没能选出一个答案，请指教

In this sentence, the main frame is xx times + noun+ of... ; what is equal to the price that....

got one example from google: "hundreds of thousands of these Americans could have paid their medical bills if they were not (literally) three times the price that the same hospitals charge their insured patients. "

"three times the price of what ... charges for ..." sounds awkward. if this usage is right, what does "what" stand for?

D: 如果what 指代price，则出现price of price。但price of sth.中的sth需要是另一个对象，如price of the watch手表的价格。

E: at which 中的at似乎不妥。如果看作定语从句的话，变成charge for sth. at (price)。应该是charge (price) for sth. 如the maker charges 30RMB for the drug.

what=the thing that, D中的what为什么不可以理解成the drug that, 这里的that是drug的关系代词, 而且存在charge for sth的说法?

When putting "that" in the sentence, it doesn't sound right when speaking the sentence out. And right after the comma, is it ok to put "that" at such a place?

I think "three times the price (get rid of the middle part) of what the drug maker charges for another pill...", then the "what" brings out the remaining of the sentence pretty smoothly.

No significant evidence to proof why it's right, but it does sound much better than "that" in my opinion.

想了半天，还是觉得that比较合理。表明 a price the drug's maker charge for another product.

另外，of what用在此处是不太好，如果一定要用what在这个句子里面，感觉这样会更好些。

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

按照XDF老师讲的首先就要排除C啊，他们的说法是THAT不可以修饰非限制性定从，前面是不可以有介词和逗号的啊。我个人认为选E。

In this sentence, the main frame is xx times + noun+ of... ; what is equal to the price that....

2、E：Charge的用法是：charge $$$ for sth... "at which" 中的at在这里是多余的。

我的问题: 有 of which 的说法吗？of which 和 of what区别？如果选项F: of which，那选C还是F呢？

我也选了E，因为which引导定语从句修饰the price，而且“以……价钱”应该要个介词at。不知道还有人是选E的么？

关于C的：GWD 5-29的逻辑中就直接出现了charge price for products的用法。

A. There is no significant difference among manufacturers of name-brand cereals in the prices they charge for their products.

D.Because of lower advertising costs, stores are able to offer their own brands of cereals at significantly lower prices than those charged for name-brand cereals.

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.

“,Per miligram,” 是插入语,可以省略不看.所以that引导一个限定性定语从句.

有人出来讲讲E为什么错吗？刚才还比较清楚，被一哥们儿出来一忽悠，又觉得E也挺对！

Galileo did not invent the telescope, but on hearing, in 1609, that such an optical instrument had been made, he quickly built his own device from an organ pipe and spectacle lenses.

A. Galileo did not invent the telescope, but on hearing, in 1609, that such an optical instrument had been made, he

B. Galileo had not invented the telescope, but when he heard, in 1609, of such an optical instrument having been made,

C. Galileo, even though he had not invented the telescope, on hearing, in1609, that such an optical instrument had been made, he

D. Even though Galileo did not invent the telescope, on hearing, in 1609, that such an optical instrument had been made,

E. Even though Galileo did not invent the telescope, but when he heard, 1609, of such an optical instrument being made, he

这题选a.

所以选a 的话,因为比较错误, three times as 错. 排除

我觉得应该选c,因为 per milligram 作插入语省略了, that 就可以直接连在price 后面了, 至于d 和e ,我不知道为什么错,但是总感觉不如c来的好.请各位NN帮忙看看d,e的毛病!!

这里size=price B=the price 又用what作为成分从句可以改成 the drug’s maker charges what for another product with the same active ingredient.