牙齿的咀嚼和胃肠的蠕动,能够将大块食物磨碎成为小块的食物,这样做有利于食物消化的主要原因是(　　)_刷题宝

题干

牙齿的咀嚼和胃肠的蠕动,能够将大块食物磨碎成为小块的食物,这样做有利于食物消化的主要原因是(　　)

A：经过磨碎可以增加食物的营养成分

B：经过磨碎可以减少食物在消化道中的阻力

C：经过磨碎可以增大消化液与食物的接触面积

D：经过磨碎可以减少食物的贮存体积

上一题下一题 0.0难度选择题更新时间:2019-04-17 10:08:28

答案(点此获取答案解析）

C

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