______ policy makers struggle to define and implement appropriate legislation, d

游客2023-10-27  20

问题 ______ policy makers struggle to define and implement appropriate legislation, development of the most destructive kind has continued over vast areas.

选项 A、As long as
B、As
C、Even
D、While

答案 D

解析 as long as表示“如果,只要”,引导条件状语从句,as引导原因或方式状语从句。while可引导让步状语从句,表示“尽管,虽然”。even不是连词,不引导句子。根据句意,D正确。
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