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.
764. 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
答案是A [疑问]为什么用numbers? 感觉 gyrfalcon的数量应该用number, 而numbers是指多个数量,比如: 30, 40,50 可以说 The numbers are all below one hundred. 请大家解释解释OG为什么用复数?