如下图三条曲线分别表示不同的食物成分在消化道中被消化的程度.请据图回答1甲是 的消化曲线.2蛋白质在消化道中开始进行化学消化的部位是 Template


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tomski如下图三条曲线分别表示不同的食物成分在消化道中被消化的程度.请据图回答1甲是 的消化曲线.2蛋白质在消化道中开始进行化学消化的部位是 coloring