environmental damage is done, it takes many years for the ecosystem to recover. A. Even if

发布时间：2020-08-17 03:12:54

    environmental damage is done, it takes many years for the ecosystem to recover.
A. Even if
B. If only
C. While
D. Once

网友回答

A. Even if
B. If only
C. While
(答案→)D. Once
解析：考查连词辨析。A即使，尽管；B要是…就好了；C当…时；然而；尽管；D一旦；句意：一旦环境被破坏，就要花很多年的事件让生态系统恢复过来。
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