2. 职称英语
  3. [originaltext] Take care of your teeth and your teeth will take care of you.

[originaltext] Take care of your teeth and your teeth will take care of you.

游客2024-01-28  47
问题  
Take care of your teeth and your teeth will take care of you. Your teeth are a living part of your body. They have nerves and blood vessels. Diseased teeth can cause pain, die and fall out. Plaque is the main enemy of healthy teeth. Everyone has plaqu
选项 A、It can change into acids causing damage to their outer covering.
B、It greatly reduces their resistance to the attacks of bacteria.
C、It makes their nerves and blood vessels more sensitive to acid food.
D、It combines with food particles to form a film on their surface.
答案 A
解析 短文中指出，牙斑上的细菌生活在糖分中，会使糖变成酸，从而破坏牙齿表面那层比较坚硬的壳由此可知，糖会变成酸，破坏牙齿表层，故答案为A。
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