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Pupils learn the knowledge of ear care in a class at Daminghu Primary School in Jinan, east China's Shandong Province, March 2, 2009, a day before the Ear Care Day. Lots of activities were held all over the nation around the 10th National Ear Care Day of China, with the theme of "Use the Acousticon Correctly". [Xinhua/Zhao Xiaoming]
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