题干
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
答案(点此获取答案解析）
A
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
