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 A is Correct. The original sentence correctly uses a singular pronoun, "its", to refer to the singular antecedent "gyrfalcon", and it properly uses the construction "its numbers are...greater than". 我错误的选择了D,做题的时候概念很模糊,觉得每个选项都拿不准。没有选A的原因是觉得”its numbers are now five times greater than"后面少了什么,感觉不能直接跟"when...." 请大家分析一下这道题的做题思路, 谢谢!!
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