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英国科学家认为:玩泥巴找昆虫有益孩子健康全球变暖导致青少年暴力行为增加有效学校领导行为的十大特征家庭藏书量与学生成绩成正比日本小学校园暴力事件呈上升趋势
British scientists think it is good for children to play with insects and help children get better Global warming leads to an increase in violence among teenagers Top ten features of effective school leadership Behavior of household collections is directly proportional to student achievement School violence in Japan is on the rise