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贵刊１９９９年第３期上发表了蔡美湖老师“７４千米／时与７５千米／时辨析”一文（以下简称“蔡文”），对人教版初二物理第一册中第２２面第６题进行了讨论．笔者对其中的论点和论证过程皆持有不同见解，现提出以供商榷．一、“蔡文”的不妥之处及其启示“蔡文”认为，只要
In the 3 rd issue of 1999, you published the article “Discrimination of 74 km/h and 75 km/h” by Cai Meihu (hereinafter referred to as “Cai Wen”). Question 6 was discussed. The author holds different opinions on the arguments and the argumentation process. First, the inadequacy of “Cai Wen” and its revelation “Cai Wen” believes that