OG verbal 70关于five times greater than的问题

monica3312

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 1970s.
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 are
D) extinction, now with fivefold the numbers they had
E) extinction, now with numbers five times greater than

正确答案 A

问题：
1. 曼哈顿上说到如果要表示倍数，不能用five times more than要用five times as old as或者 five times the number of这种形式
这里five times greater than为什么可以？是只能不能跟more than吗？
2. number比较大小是不是只能用greater不能用more?
3. fivefold的用法，我查到fivefold是副词形容词都可以用吗？这里的fivefold是不是形容词？

monica3312

求解求解！自己顶一顶！

ukyo2003

这一题Ron讲得很清楚了，我恐怕加不上更多观点。Manhattan多看一下。

凝渊

ukyo2003 发表于 2015-6-4 10:48
这一题Ron讲得很清楚了，我恐怕加不上更多观点。Manhattan多看一下。

不懂，求解释。。。感觉这题是个特例？

haveacigar233

ukyo2003 发表于 2015-6-4 10:48
这一题Ron讲得很清楚了，我恐怕加不上更多观点。Manhattan多看一下。

求RON解释链接~xiexie

haveacigar233

http://www.manhattanprep.com/gmat/forums/post117891.html#p117891

Ron的相关解释，“ as far as SC is concerned, both 'N times as great as...' and 'N times greater than...' are fine.”