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编者注:朱红云、苗相军老师的来稿《2012年江西高考数学(文)第20题的推广》和阮灵东老师的来稿《改编高考题得出新命题》涉及到同一主题,各有可取之处,本刊将两篇稿件合并修改后刊
Editor’s note: Zhu Hongyun, Miao Xiangjun teacher’s contribution “2012 Jiangxi college entrance examination mathematics (article) the 20th issue of promotion” and Ruan Lidong teacher’s draft “adaptation of the college entrance examination topic come to a new proposition” involves the same theme, each desirable Department, the publication of the two manuscripts combined with the revised edition