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Soon I saw Li Jianzhong's C # Object-Oriented Design Pattern Lecture on MSDN's Webcast. A very good series of lectures gave me a new understanding of design patterns. I realized that learning design patterns, specifically learning object-oriented design patterns, should start with learning object-oriented. "The principle of object-oriented is like understanding the rules of chess, and the design pattern is equivalent to a mess. I don't know what the rules look at." Since I have been doing ASP.NET development for the previous year, although I have been writing classes, learning Duwamish to make hierarchical architecture, typed DataSet and custom entity classes, it seems that I haven't used interfaces much in the past year, and I seldom use any polymorphism. In fact, the understanding of object-oriented programming is still very vague.Ensure that MDT team can be notified and fed back in time when serious complications, adverse events or emergencies and deaths are encountered during diagnosis and treatment. The MDT team should regularly review and summarize these cases.11岁的哥哥灿伊（俞承浩 饰）居然像个大人一样，无微不至的照顾着妹妹小伊（金香奇 饰）。兄妹俩人一直都相信，只要他们乖乖听话，总有一天，离家出走的妈妈会回到他们身边。小伊生日到了，为了满足她的心愿，哥哥送了一只刚刚出生小狗送给她，小伊认为这是妈妈送给她的礼物，所以取名为“心意”。有了“心意”的陪伴，灿伊不在家的时候，小伊有了玩伴。三个小家伙像一家人一样，快乐的生活着。转眼“心意”长大了，在一个阳光灿烂的冬日，“心意”拉着冰车，带着小伊在结冰的江上快乐的玩耍，不料发生意外，小伊掉进冰窟窿里面……灿伊把小伊意外的过错归咎在“心意”的身上，没有妈妈，没有小伊妹妹的灿伊，也不能接受“心意”再呆在自己身边，于是灿伊离家出去，开始了新的生活，而“心意”尾随其后，也开始了一段追觅之旅……There are five events in equestrian, fencing, swimming, shooting and cross-country running, with one medal for men and one medal for women.他们固然都是千里挑一的英勇儿郎，若是单打独斗，武功身手也是一流，然而论混战中自保和杀人，那还是久经沙场的边军更凶狠顽强。