______there are a large number of chemical factories, the air is likely to be po

游客2024-01-18 8

问题 ______there are a large number of chemical factories, the air is likely to be polluted.

选项 A、That
B、Where
C、Once
D、As

答案 B

解析 where引导地点状语从句。其他三项不能引导地点状语从句。

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