消化系统的部分器官如图所示1食物中的糖类脂肪和蛋白质三大营养物质必须消化成可溶于水的小分子物质才能被人体所吸收消化和吸收营养物质的 Template




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tomski消化系统的部分器官如图所示1食物中的糖类脂肪和蛋白质三大营养物质必须消化成可溶于水的小分子物质才能被人体所吸收消化和吸收营养物质的 coloring