91. The gyrfalcon, an Arctic bird of prey, has survived a close brush with extinction; its numbers are now five times greater than when the use of DDT was sharply restricted in the early 1970’s

A. extinction; its numbers are now five times greater than

B. extinction; its numbers are now five times more than

C. extinction, their numbers now fivefold what they were

D. extinction, now with fivefold the numbers they had

E. extinction, now with numbers five times greater than

A: correct,

B: five times more than 有歧义

C: their 无指代；两个句子连接无连词

D: they 无指代

E: numbers需要加定冠词或者指示代词；独立主格结构没有A选项中的对比概念

我选E,这个解释不太能理解接受

这里都是numbers应该有存在的理由吧... 至少有其他错误原因~~~~~~~~

E的独立主格结构应该是优先的吧~~~~~~~~~~~~谁来解释下~~````

我的看法是E独立主格内部的比较不是很清楚

要么是numbers和numbers比较，要么now和when...比较，比较对象要对等。E在这

一点上不是很清楚，而A没有什么问题，比较也很清楚。这种情况下选A

一几之见，请大家斧正～！

当然是A了：

"；" 连接两个句子

“greater” is much better than "more"

E逻辑意思出错了，无论是The gyrfalcon还是extinction作为with numbers five times greater than 的逻辑主语都是错误的。

例如：The gyrfalcon with numbers five times greater than ...这样表达合乎逻辑意思吗？

we can not say The gyrfalcon with numbers

楼主好好想想！

不同意楼上的说法。如果按ls的解释的话那下面这题就不对了

OG10-25
The end of the eighteenth century saw the emergence of prize-stock breeding, with individual bulls and cows receiving awards, fetching unprecedented prices, and excited enormous interest whenever they were put on show.
(A) excited
(B) it excited
(C) exciting   
(D) would excite   （C）
(E) it had excited

显然the end of 18th century或者emergence做with bulls and cows也不合理。

我认为这道题的with结构是独立主格的with复合结构
它的构成是：“with ＋ 宾语 ＋ 宾语补足语”。宾语由代词、名词、名词词组充当，宾补由分词、不定式、形容词、副词、介词短语、名词等充当。
例：He used to sleep, with the door open. 他过去常开着门睡觉。（形容词）
例: With the work done，he went home. （过去分词）
就with这个单独的结构而言并没有问题

E之所以错在于：
1）now用来修饰整个with的独立主格结构，with结构内部的比较－numbers和when...相比－就不对等，而A的比较是很清楚的
2）单独的numbers语义上来体会也不是很明确，A选项its numbers在语义上就比E清楚得多

请大家斧正～！！

独立主格的作用还不是解释或者修饰阿！~with在这道题当然符合句子意思！

楼主的那道题，with无论作为独立主格还是伴随状语都是严重的逻辑错误！~

Choice D and E wrongly use a phrase introduced by "now with" to modify Thy gyrfalcon. In both choices, the phrase confusingly seems to parallel "with extinction"; a new clause with a present tense verb is needed to state what the gyrfalcon's numbers are now.

这是OG的原题，OG10-251。