We use teeth to eat and we need teeth to talk. But do you really know them? Let’s meet the “cool tools” in your mouth and learn how to protect them.

1., unlike your brain or heart. The first tooth usually comes out when a baby is 6 to 12 months old. Then more and more teeth begin to grow. 2.. We call them baby teeth, and there are 20 of them. Baby teeth cannot stay with us forever. Baby teeth will start to fall one by one, when you are 6 years old. 3.. You have to suffer the pain of growing adult teeth 12-13years old. An adult usually has 28-32teeth. Why pain?

A tooth with a hole is a decayed tooth(蛀牙). 4., you’ll get one. Then germs(細(xì)菌)will build up and eat away your teeth. So, try to clean your teeth after you eat candy or just eat less.

In America, there is a lovely story for children. It is said that there are fairies (精靈）for everyone’s baby teeth. 5., he can put it under his pillow before sleeping. Then when he wakes up in the morning, he always finds money or a small present from the tooth fairy instead of his tooth in its place.

A.They have to make room for your second set of teeth—adult teeth

B.Your teeth are not ready to work when you are born

C.If you don’t clean your teeth regularly

D.Most kids have their first set of teeth at 3 years old

E.Each time a child’s baby tooth falls out

F.He saw a fairy singing.

A.They have to make room for your second set of teeth—adult teeth

B.Your teeth are not ready to work when you are born

C.If you don’t clean your teeth regularly

D.Most kids have their first set of teeth at 3 years old

E.Each time a child’s baby tooth falls out

F.He saw a fairy singing.

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