我对此题目的理解是：一种新的头发生长药剂按毫克卖价是另一种使用相同成分的药剂价格的三倍。
我觉得有比较的含义，为什么这里不能用AS充当比较的连词呢？ 就是觉得挑不出A的错，其实看答案也觉得C说的挺通顺的。（找到一种解释：amy_lyy曾说过：A.B，as前后结构不对称， 就是比较时必须为as(adv.)... as(conj.) ..., not so/as...as..连用，但是有例句：The population of his city is twice as largeas that of mine.我糊涂了（连夜翻找答案，可能营养供应不足）这里的比较也没有一定是要as...as啊
或者AS能够作为方式状语从句出现么？大家能帮我看看对么？我AS实在没学好。。。）
as充当连词 as常常用来引导一个分句,在句子中充当状语,表示比较,（解释引用自：http://cache.baidu.com/c?word=as%3B%D3%C3%B7%A8&url=http%3A//attach%2Eetiantian%2Ecom//ett20/study/question/upload/2006/8/24/1159091503053%2Edoc&p=8b2a9f05ce8518e802bd9b7c57&user=baidu
顶下，还有人说three times...as 不可以,为什么不可以呢?
是不是说新东方总结
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
可以不是也有这样的正确句子(引自搜索引擎的AS用法小结)The population of his city is twice as largeas that of mine.
是否是因为此用法不规范呢??请求给点指点吧,,脑子彻底糊涂和眩晕了..
I can't find any support for A. Let's take a look at your example.
The population of his city is twice as large as that of mine.
That's the as....as structure right there.
The answer lies between C and D.
C. A drug is being sold 3 times the price that the maker charges for another product.
D. A drug is being sold 3 times the price of what the maker charges for another product.
In C, "that the maker charges for another product" modifies "price". So, C actually is:
C. A drug is being sold 3 times the price.
In D, prep. "of" + what ... a little bit long.
Between those two, I incline to C. However, the following examples illustrates both usage. With that being said, you should not devote more time to this issue.
Good luck.
Audi is paying about ? million for the deal, which is three times more what Mercedes had to pay for the same number of seasons.
Automotive News Europe; 10/16/2006, Vol. 11 Issue 21, p19-19, 1/4p, 1c
The sale translates into $282 million proceeds for Behrman, presenting a return multiple of 3.6 times of what it has invested.
Buyouts; 7/24/2006, Vol. 19 Issue 15, p14-14, 2/3p
Japan has built a PV installation capacity three times
that of the USA as of December 2003.
Energy Policy; Feb2007, Vol. 35 Issue 2, p1186-1195, 10p
As a result, the experimenter would prefer to run the experiment in such a manner as to minimize the number of times
that he/she must change the levels of these factors.
Quality Engineering; Jan2007, Vol. 19 Issue 1, p1-15, 15p
In order to open an account the client should make an initial deposit which is seven times
that of a noninterest-bearing account.
Medical Economics; 12/15/2006, Vol. 83 Issue 24, p16-16, 1/6p
我也选错了，分析了这道题，收益不小。
感觉还是D好！~
这道题到现在还没有个定论
1.
Audi is paying about ? million for the deal, which is three times more what Mercedes had to pay for the same number of seasons.
Automotive News Europe; 10/16/2006, Vol. 11 Issue 21, p19-19, 1/4p, 1c
2.
The sale translates into $282 million proceeds for Behrman, presenting a return multiple of 3.6 times of what it has invested.
Buyouts; 7/24/2006, Vol. 19 Issue 15, p14-14, 2/3p
3.
Japan has built a PV installation capacity three times that of the USA as of December 2003.
Energy Policy; Feb2007, Vol. 35 Issue 2, p1186-1195, 10p
4.
As a result, the experimenter would prefer to run the experiment in such a manner as to minimize the number of times that he/she must change the levels of these factors.
Quality Engineering; Jan2007, Vol. 19 Issue 1, p1-15, 15p
5.
In order to open an account the client should make an initial deposit which is seven times that of a noninterest-bearing account.
Medical Economics; 12/15/2006, Vol. 83 Issue 24, p16-16, 1/6p
首先，例句4不应与其他例句比较，因为其中that的功能和另外四句不同，引导目的状语，是连词，而其它四句that/what都充当成分；
其它四句中12用what,，35用that，区别在于：
12中what充当（指代）后面句子中动词的宾语（分别为pay和invested的宾语）；
35中that指代前面已出现的描述对象（分别为a PV installation和an initial deposit ），that后常跟of表指代，与gmat中的agreement/paralism考点相同；
两种情况都可以把what/that还原成原来的宾语/描述对象。
判断的时候，如果后面有动词、缺宾语用what；反之且后面有of则用that。
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原题目中和以上语法点不同，上述4个例句中的what/that都是紧跟times的，而原题目却不是紧跟times，多了price， 选项C中的that及后面的句子是修饰price 的，所以即非指代也非充当宾语；如果选了D，则what表示charge的宾语，但该宾语早就已经给出，即，price，所以如果选D原句将会多出一个宾语，变成price of the price，因此D是不对的。
以上个人观点。
C明显更正确
n times + n. 是常见考点， that是修饰n的定语
, per milligram, 插入语，无视
楼上提供了其他的用法：
3.6 times of what
three times more what
注意中间都没有名词哦！因此加了名词就不对了
presenting a return multiple of 3.6 times of what it has invested. 对象对等
presenting a 3.6 times
multiple of
what it has invested. 意思开始混乱了吧
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