北师大版高中英语模块7--Unit 21 Lesson1-3
教程:北师大版高中英语模块7(选修)  浏览:492  
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    [00:01.17]It has also been proven that chewing gum

    [00:03.50]for long periods of time means

    [00:05.48]that the body does not have time to rest.

    [00:07.72]If this is the case,

    [00:08.95]the stomach may become tense.

    [00:10.85]Eventually this could lead to stomach sickness.

    [00:14.15]Although some dentists claim that sugar-free

    [00:16.50]gum decreases the possibility of tooth decay,

    [00:19.32]others are not convinced.

    [00:21.37]They argue that if dentists encouraged its use,

    [00:24.02]the wrong message would be sent out

    [00:26.57]and children might chew gum instead

    [00:28.25]of brushing their teeth.

    [00:29.99]Unless we are careful,

    [00:31.41]the number of young people with bad teeth

    [00:33.36]will rise and this will become

    [00:35.47]a serious problem.

    [00:37.07]On balance therefore,

    [00:38.39]maybe it would be better to forget chewing gum,

    [00:40.84]sugar-free or otherwise,

    [00:42.71]and rather brush your teeth regularyly,

    [00:45.12]eat healthy foods avoiding sugar,

    [00:47.22]never start smoking,

    [00:48.83]and chew a mint leaf if you're worried about

    [00:50.79]your breath!

    [00:51.67]

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