如图1所示是细胞直接与内环境进行物质交换的示意图�处的箭头表示血液流动的方�下列分析中正确的是a.若�为组织细胞物质交换过程如图2所示 Template




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tomski如图1所示是细胞直接与内环境进行物质交换的示意图�处的箭头表示血液流动的方�下列分析中正确的是a.若�为组织细胞物质交换过程如图2所示 coloring