题目内容：

Teeth are important．Strong，healthy teeth help you chew foods that help you grow．They help you speak clearly．And，they help you look your best．Here are some tips for you to take care of your teeth．

1．Brush your teeth in the right way．

Brush your teeth at least twice a day—after breakfast and lunch or after sweet snacks，too．

Brush all of your teeth，not just the front ones，Spend time brushing teeth along the sides and back of your mouth．Brush away from your gums，too．

Spend at least three minutes each time you brush．Play a song you like to help pass the time．Get a new toothbrush every three months．When you buy your toothbrush，be sure it has soft bristles．

2．Learn how to floss your teeth．

Flossing is a very important way to keep your teeth healthy．Food may hide in places where a toothbrush cannot get to，like the space between two teeth．Flossing can help get rid of it．Carefully move floss between two teeth．Up and down．You’ll need to floss your teeth at least once a day．

3．Have good eating habits．

You need to be careful about what you eat and drink. Eating sugar is a major of tooth decay．Eating sugar before you go to bed can make things even worse，eat lots of fruit and vegetables and drink water instead of soda．

1.The passage is mainly about          ．

A．teeth are important.

B．how to brush and floss your teeth

C．how to form good eating habits

D．how to take care of your teeth

2.The underlined word “tips” in this passage means          ．

A．money given to the waiter for personal services

B．piece of advice on how to do something

C．light blow, tap

D．thin end of something

3.Which is NOT mentioned in this passage？

A．Flossing your teeth．                                       B．Having good eating habits．

C．Brushing your teeth．                               D．Going to see the dentist．

4.Which of the following statements is NOT true according to this article？

A．We should brush our teeth at least twice a day．

B．Flossing can help to get rid of the food hidden between two teeth．

C．One of the major causes of tooth decay is eating sugar．

D．We don’t have to brush our teeth if we eat a lot of fruit and vegetables．