OG-251。 请 NN 这种解题方法对不？

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（A）

(E) extinction, now with numbers five times greater than

我是这样认为的 ： 一个短语 + 上 一个从句 是错的 （我好像在那里见过）  即：now with fivefold the numbers they had +when the use of DDT was sharply restricted in the early 1970’s.        所以 CDE错。。。--------------问这种判断方法对不对？

B MORE THAN 错。 所以选A 。。。。