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　　A survey done by the University of Michigan shows a big drop in the number of teenagers who say they smoke cigarettes.

　　In the survey, over 44,000 students in grades 8, 10 and 12, from 424 schools across the

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　　were asked about their smoking habits. The results show that smoking among 8th graders

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　　from 21 percent in 2002, to 12 percent in 2007.In the same period, smoking dropped from 30% to 21 % among 10th graders and from 37 % to 30 % among 12th graders.

　　Anti-smoking organizations think educating kids about smoking risks are the

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　　of the drop. “The important

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　　in teen smoking did not just happen by chance，” says study director Lloyd D．Johnston. “A lot of individuals and organizations have been trying to

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　　the high rates of teenagers.”

　　Others say the

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　　price of cigarettes is an important reason teens are cutting back.

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　　the reason, the drop in teen smoking is good news to everyone, even cigarette-making companies who

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　　their product is only for adults, not kids. Health experts are particularly

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