91. 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
A: correct, B: five times more than 有歧义
C: their 无指代;两个句子连接无连词
D: they 无指代
E: numbers需要加定冠词或者指示代词;独立主格结构没有A选项中的对比概念
我选E,这个解释不太能理解接受 |