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為甚麼飲牛奶會肚阿?

為甚麼有些人飲奶後會肚阿, 有些人又不會? 肚阿的人是否就是對牛奶敏感的意思?

By handycapgentman  (middle-school student) on 2013-02-19  Answers 1   Views 1897

i can answer

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By JaysonKann (pupil) on 2013-02-21

呢類人多數係因為佢地的身體未能消化牛奶入面的乳糖.

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