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Surname is a sign and symbol that indicates a person's family and blood relationship. The descendants of the same ancestor are called clans. Surnames originated from the name of the tribe or the name of the tribal leader. Its function is mainly to distinguish the descendants of different clans in the tribe and to facilitate intermarriage between different clans. Therefore, the emergence of surnames marks the change from group marriage to blood marriage and is an important milestone in the progress of human civilization.What causes this problem?Practice changing brain structure//065某要塞战区两栖侦察队新到的副队长乔旗是毕业于名牌军事学院侦察专业的研究生，队长于波以骁勇善战著称，在历次比武中屡建奇功。他们接到命令，年底要参加战区侦察兵大比武，选拔参加国际比赛的精兵强将，那是仅有的八分之一次机会。乔旗在学习国际侦察兵教案中获得许多新的训练理念，对忘我工作的于队长触动很大，在训练中，俩人不断磨合成了互补型搭档，也提升了训练的水准，使队员们顺利完成了路程设置、作战、泅渡、反侦察、攀岩、排雷、躲避假设敌等16项演习科目，并取得了好成绩。该剧通过几个现代基层官兵的塑造，折射出军旅生活的不同侧面，以及他们对我军实现机械化、信息化及未来战争的思考。Conforming to the explosive growth of China's cultural and tourism industry, "Charming China City? The" City Alliance "was formally established. The alliance brings together the participating cities of "Charming China City" to build a cooperative and shared platform for the development of cultural and tourism industries. Ha Xuesheng, director of the program department of CCTV's financial channel, Tang Lin, producer of CCTV's financial channel "Charming China City", and Mei Xiangrong, chief consultant of Pacific Century Tourism, awarded licenses to representatives of members, directors and executive directors of the City Alliance.当玄龟、赵亮等一批六七个清南村的少年都一个不落地过关后，一个左脸上有条斜拉疤痕的黑大个军汉走了上来。