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chang yi shu
Author(s): 
Pages: 46
Year: Issue:  4
Journal: CHINA NATURE

Abstract: <正> 亲爱的少先队员们: 青蛙是我们人类的忠实朋友,一只青蛙一天能吃掉成千上万只害虫,它们不分昼夜地守卫着田园,而无所求。可是,由于人类乱捕青蛙,破坏它们的生存环境,青蛙的数量越来越少,它们的生存受到严重威胁。因此我向你们发出倡议: 一、劝劝农民伯伯们,不要滥用农药。农药虽杀死了害虫,然而又杀死了无辜的青蛙。用农药既花钱,
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