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A teacher imparts knowledge about the Earth to students in the Guanminglu Primary School in Zaozhuang City of Shandong Province on April 21, 2009. The Earth Day, celebrated on every April 22, is a day designed to inspire people's awareness and appreciation for the Earth's environment. [www.zzdnews.com]
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![A teacher imparts knowledge about the Earth to students in the Guanminglu Primary School in Zaozhuang City of Shandong Province on April 21, 2009. The Earth Day, celebrated on every April 22, is a day designed to inspire people's awareness and appreciation for the Earth's environment. [www.zzdnews.com]](http://images.china.cn/attachement/jpg/site1007/20090422/001109b42f730b58faff11.jpg "A teacher imparts knowledge about the Earth to students in the Guanminglu Primary School in Zaozhuang City of Shandong Province on April 21, 2009. The Earth Day, celebrated on every April 22, is a day designed to inspire people's awareness and appreciation for the Earth's environment. [www.zzdnews.com]")
