[求助]大全764---一个很菜的问题

tinayc

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
the key:A。这道题是考now与when的比较，但是为什么 B 不对呢，more than也可以修饰numbers呀，请大家指教！

古镯

考点：倍数增减的表达

【OG】In B, the construction its numbers are... more is not idiomatic: there are more birds, but not more numbers.

more than强调的是物之间的比较，而greater than强调的是数的增减和倍数的比较！

数目增减和倍数增减的表达的固定方法

倍数（数量词）+形容词/副词比较级+than
five times greater than

jason00

这里的its 后面的numbers为什么是复数呢？