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| 说起刷牙，一般我们都以为就是为了防止蛀牙（cavities）然而，新的研究显示，刷牙可真的不仅仅是为了你的牙齿好，口腔卫生做的不好还会伤到你的肺（lungs）这都要说到你口腔里的微生物群（microflora），你不好好刷牙就可能让它们发生些危险的变化，而这些变化会顺着你的呼吸道（respiratory tract）入侵你的肺，进而让你更可能患肺炎（pneu http://www.24en.com/p/257766.html | |
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向外国同学介绍中国春节习俗Directions: For this part, you are allowed 30 minutes to write a short essay on the following situation. You should write at least 150 words but no more tha... http://www.joozone.com/tg/803427.html | |
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My name is Jack, I am 10 years old now, I am studying at a primary school. I like to play computer games when I go home after school because it relaxes me. O... http://www.joozone.com/gaokao/803397.html | |
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It is said that many people are afraid classical literature will be totally abandoned by human beings one day. I have different opinion about this. There are... http://www.joozone.com/gaokao/803398.html | |
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