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    Every person has two sets(副)of teeth. The first set of twenty begins to grow when you are over Six months old. The second set of thirty-two grows from the age of six until you are about twenty-one years old.

    To help your teeth grow strong, you must drink plenty of milk and eat green Vegetables. Then your body Will have the right chemicals(化学物质)that build teeth.You should brush your teeth after each meal Then few bits of food willbe left on or between them to cause decay(腐烂).Make sure that you turn thebrush and go up and down as well as(和)brushing sideways(向侧面地).Usedental floss(清牙齿用的牙线)to make sure all food is removed(移走)fromin between each tooth. If you can not brush your teeth after eating, rinse(冲洗)them with water. or eat an apple or a carrot. Try to visit a dentist(牙医)every six months. If there is a hole in a tooth, he or she will fill it. If you do not have it filled, then the hole Will grow larger. When a hole grows too big, he tooth may have to be taken out. It is better to keep all your second set of teeth for as long as possible. Filling a gap(豁口)where a tooth has come out with a kind of bridge and using a false(假的)tooth cost a lot of money.

    阅读短文,并根据短文内容将句子补充完整:

    1. Your first twenty teeth begin to grow about________.

    2. Two kinds of food that are good for your teeth; They are________.

    3. As well as brushing teeth, you should use________.

    4. You should visit a dentist every________.

    5. How many sets of teeth does every person have?

     

    答案：
    解析：

    		1.six months old  2.milk and vegetables  3.some dental f1oss  4.six months  5.TWO sets


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