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题型:单选题 题类:常考题 难易度:普通

牛津版(深圳·广州)初中英语七年级下册Module 2 Unit 4同步练习3

We ______ oxygen ______ the air and release (释放) CO2 into the air.
A、take in; from B、release; into C、take; into D、release; from
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