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或者“全班同学都是团员”为假，或者“全班同学都不是团员”为假；“全班同学都不是团员”为假；所以“全班同学都是团员”为真。推理是否有效？为什么？

发布日期：2021-07-19

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团员

中国共产主义青年团团员，简称共青团员，是中国共产党的助手和后备军，是指按照《中国共产主义青年团章程》规定的入团条件和程序被批准加入中国共产主义青年团的信仰共产主义的中国青年。年龄在十四周岁以上，二十八周岁以下的中国青年，承认团的章程，愿意参加团的一个组织并在其中积极工作、执行团的决议和按期交纳团费的，可以申请加入中国共产主义青年团。截至2021年12月31日，全国共有共青团员7371.5万名。其中，学生团员4381万名。

中文名: 共青团员
简称: 团员
成员: 14-28周岁的青年

外文名: Member of the Chinese Communist Youth League
从属组织: 中国共产主义青年团
入团年龄: 14-28周岁

标签：全班同学全班同学都不是全班同学都不是

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