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标题: 六级练习2016.07.30 [打印本页]

作者: Rebecca949    时间: 2016-9-5 16:03     标题: 六级练习2016.07.30

[audio]http://sound.yywz123.com/tingbbs/cet6/cet620160730.mp3[/audio]


Dr. Faustick has cleaned his teeth after meal for thirteen years and has not had a single decayed tooth. He pointed out that sugar is a major agent in dental decay. Particularly the sugar in sweets, cakes, and soft drinks. Ideally you should keep a tooth brush in your pocket and (1)_________________________.
When this is impractical you can at least make sure that you have a drink of water and let the water through your teeth to force out any particles of food. (20________________________by the time they are fifty. Many have a complete set of false teeth by that time. In any case neither toothache nor a visit to a dentist is very pleasant. So it is worthwhile making an effort to keep you own teeth as long as possible. (3)___________________________.




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作者: oralex    时间: 2016-9-8 15:01

use it inmediately after you have finished eating
7 out of 10 people lose at least half of their teeth
the main prevent  agent is simply water




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