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【题目】When people ______, they take air into their lungs (肺部) and let it out again.
A.eat
B.breathe
C.drink

【答案】B
【解析】eat 吃,breathe 呼吸,drink 喝,根据后半句 they take air into their lungs (肺部) and let it out again.(他们把空气吸入肺部再让它出来)可以推断前半句意思是“当人们呼吸时”,故选B。

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