Cigarette Smoking by Grade Level：2005-2009 Which grade had the highest percentage of smokers in 20057

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问题 Cigarette Smoking by Grade Level：2005-2009

Which grade had the highest percentage of smokers in 20057

选项 A、The 9th．
B、The 10th．
C、The 11th．
D、The 12th．

答案C

解析通过2005年对应的数轴可知，当年抽烟者所占比例最高的年级为11年级。故选C。

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GCT工程硕士（英语）

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