下图是人体呼吸全过程图解，请据图填空。 (1)图中①-④分别表示呼吸过程中的哪一个环节？① 如图是呼吸的全过程示意图，请据图回答：（1）从下列选项中选出...
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| (1)肺通气；肺泡内的气体交换；气体在血液中的运输；组织里的气体变换 (2)①② (3)呼吸运动；气体的扩散作用 (4)静脉血；动脉血；动脉血；静脉血 |
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