OG SC 72题 关于more than

72. 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

正确答案是A. 但B为什么不对。

OG 解释是说 B  The use of more instead of greater inappropriately implies there are now more numbers，rather than more gyrfalcons．

对这个解释，偶不太理解，烦指点一下。

数目比谁谁谁的大而不是多。