I hope all the precautions against air pollution, ______ suggested by the local

游客2023-11-23  22

问题 I hope all the precautions against air pollution, ______ suggested by the local government, will be seriously considered here.

选项 A、while
B、since
C、after
D、as

答案 D

解析 as作关系代词,引导定语从句,as指代整个主句,本句中as作从句的主语。例如:He did it on purpose,as is often the case.这是他故意干的,情况通常是这样。The sunrise,as is seen from the top of Mount Tai,is a brilliant spectacle .从泰山顶上看日出是一片辉煌壮观的景色。而while,since和after都是连词,只能引导状语从句,不在从句中作成分,更不用说作主语了。
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