全部商品分类

您现在的位置: 全部商品分类 > 进口图书 > 进口图书 > 其它图书(进口)

TEETH

  • 定价: ¥22
  • ISBN:0761415890
  • 开 本:24开 精装
  •  
  • 折扣:
  • 出版社:BB
  • 页数:47页
  • 作者:BETH FERGUSON
  • 立即节省:
  • 2004-01-01 第1版
  • 2004-01-01 第1次印刷
我要买:
点击放图片

导语

  

    What's the hardest part of your body? It's not your bones or your fingernails. It's your teeth. Teeth need to be strong because they chew up all the food you eat.
    When you chew your food, digestion begins. During this process, the bits of food you swallow travel to your stomach. Chemicals in your stomach break down the bits into even smaller particles called nutrients. Next, the nutrients move into your small intestine, where they enter your blood vessels. Your blood then carries the nutrients to the rest of your body, so they can help you breathe, flex muscles, and think during tests.

内容提要

  

目录

Teeth Are For Chewing
Two Sets of Teeth
Four Kinds of Teeth
The Parts of a Tooth
When Teeth Need Help
Cavities and Gum Disease
Keeping Teeth Healthy
Glossary
Find Out More
Index