请问OG251选项中为什么用its numbers而不用its number

fortitude · 发表于 2007-9-28 00:29:00

251. 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

Why can't I use" its number" instead of "its number" in selections A and B

Thank you very much

sdydean · 发表于 2007-9-28 08:19:00

同问同问

sdydean · 发表于 2007-9-28 08:43:00

刚才找了一下以前的讨论贴，似乎大家得出的结论是“ETS混蛋！”

fortitude · 发表于 2007-10-8 16:35:00

自己顶一下

fortitude · 发表于 2007-10-8 16:38:00

自己再顶一下

fortitude · 发表于 2007-10-8 16:39:00

我就不信大牛不出现

fortitude · 发表于 2008-5-13 22:33:00

ding

fortitude · 发表于 2008-5-13 22:33:00

ding

fortitude · 发表于 2008-5-13 22:33:00

ding

fortitude · 发表于 2008-5-13 22:34:00

ding

请问OG251选项中为什么用its numbers而不用its number

请问OG251选项中为什么用its numbers而不用its number

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