人体每天必须从外界获取一定量的营养物质才能健康的生活.下图表示各种营养物质在人体内的变化过程请据图回答.1图中ab分别代表人体的消化 Template




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tomski人体每天必须从外界获取一定量的营养物质才能健康的生活.下图表示各种营养物质在人体内的变化过程请据图回答.1图中ab分别代表人体的消化 coloring