北师大版高中英语模块7--Unit 21 Lesson1-3

[00:01.17]It has also been proven that chewing gum¹
[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 decay²,
[00:19.32]others are not convinced³.
[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 mint⁴ leaf if you're worried about
[00:50.79]your breath!
[00:51.67]

1 gum   

n.牙龈；口香糖；树胶

参考例句：

• We can stick these pictures into the book with gum.我们可用胶水把这几张画粘贴在书里。
• Americans like to chew gum.美国人喜欢嚼口香糖。

2 decay   

vi.腐烂，衰落；n.腐烂，腐朽，衰败状态

参考例句：

• The vegetables have begun to decay.那些蔬菜已开始腐烂。
• Our powers decay in old age.我们的体力在老年时就衰退。

3 convinced   

adj.确信的；深信的；有坚定信仰的v.使确信(convince的过去分词)；说服

参考例句：

• I am convinced of her innocence. 我坚信她是清白无辜的。
• I'm convinced there's a jinx on this car. 我看这辆汽车是灾星。

4 mint   

n.薄荷，铸币厂；vt.铸造（硬币），创造（词）等

参考例句：

• The mint makes coins.铸币厂制造硬币。
• This candy tastes of mint.这糖果有薄荷味。