题目

                                          you are hungry,you can buy some food to eat. A.Because                              B.And                       C.If                                D.So 答案:C如图表示淀粉、脂肪和蛋白质在消化道中各部分被消化的程度.请据图判断:蛋白质开始被消化的部位是( )A.口腔B.食道C.胃D.小肠
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