人体是一个统一的整体会不断地从外界获得营养物质同时又将体内产生的废物排出体外.如图是人体与外界进行物质交换的示意图请据图回答问题1 Template




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tomski人体是一个统一的整体会不断地从外界获得营养物质同时又将体内产生的废物排出体外.如图是人体与外界进行物质交换的示意图请据图回答问题1 coloring