Without air, there would be no atmosphere to protect us______the sun’s deadly rays.

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问题 Without air, there would be no atmosphere to protect us______the sun’s deadly rays.

选项 A、from
B、under
C、to
D、in

答案A

解析 Protect…from是一个短语，意思是“保护……以免遭”，介词from可以用against代替。

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