the real problems with choice a:
- 'the ratio of 42 times' is redundant; it'd be good enough just to say '42 times'. note that the word 'ratio' is not redundant in choices c-d, since it's being used as a modifier to make a logical connection.
- it doesn't say 42 times what. not only is that unacceptably vague, but it also breaks parallelism.

［比较］
CEO's是CEO的复数
c选项419 times the pay和42 times their pay形成对比，the ratio是同位语
其余选项the ratio和pay无法形成比较

When speaking about ratios as is done here, you cannot leave 'times' hanging like this. sometimes you can use pronouns - the height of the sears tower is more than four times that of the statue of liberty - but you can't use empty space. choice c exhibits proper usage of 'times' followed by their pay. it also uses the ratio, a correct identification of exactly what is being described.

choice a, 还原 CEO's now earn an average of 419 times more pay than bule-collar workers (do)是可以接受的，但是compared to a ratio of 42 times，比较对象是419 times 和 a ratio
choice b, a ratio作为了419 times的同位语。比较对象依然是a ratio 和42 times
choice c, 比较对象是419 times和42 times。correct
choice d,e没有谓语动词

B：ratio不能主动发出compare的动作

e看清楚没有谓语CEO's now earning an average

A……，compared with/to B. compare用被动，不用主动

419 times对比42 times，不能419倍对比a ratio，a ratio做419 times的同位语，类似于419 times is a ratio，但二者不能直接比较

e肯定不对啊都没有谓语，尴尬的结构，为啥错选，没看清
CEO's now earn 肯定是对的

B：ratio不能主动发出compare的动作
C：as compared to看成一个完整的介词表比较

A： 是 419 times the pay和 ratio比较，不对，pay不能跟ratio比较

B:ratio可以跟42 times相比，但不能主动发出compare的关系

选项A中，compared to a ratio of 42 times是个伴随状语逻辑主语不对；选项B中a ratio that compares to 42 times 是同位语，但是同位语的先行词都是抽象的名词，同位是解释说明具体的内容，所以不合理；C是一种省略；DE的核心词是CEO's,也不对，所以选择C.

the apostrophe is incorrect in all these cases. All of the answer choices should say "CEOs", not "CEO's". We only use an apostrophe when we're implying possessive, or "is". Neither of those are the case here.

A/B: 419 times VS. ratio; D/E: CEO's VS. 42 times/ratio

B选项a ration（比率）和42次对比；C 选项as compared to可以作对比，前后两个都是次数

CEO的复数形式，有的时候是CEOs，有的时候用CEO‘s，而是后者更常用。

the real problems with choice a:
- 'the ratio of 42 times' is redundant; it'd be good enough just to say '42 times'. note that the word 'ratio' is not redundant in choices c-d, since it's being used as a modifier to make a logical connection.
- it doesn't say 42 times what. not only is that unacceptably vague, but it also breaks parallelism.

宾语从句that不能省，A选项中more than的比较没有歧义，但是后面compared to 的比较有问题，是用419times 和a ratio 比较，所以错误。
B中compare要用过去分词，compared。

(C) 正确，as compared to比较结构，419 times the pay与42 times their pay比较，the ratio…是同位语。