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A) Object-oriented paradigm. That is, people's legendary thoughts. Encapsulation, inheritance and polymorphism, in my opinion, are slightly higher than if, for, etc., which are also grammatical problems. The three principles to master in object-oriented programming are Plato principle, Liskov substitution principle and Parnas principle. These three principles are actually very simple. Any principle that you find difficult to fall in love at first sight and quickly identify with is not a good principle.战国时，齐国女孩桃花开拼命想改变命运，但就在她中选孟尝君的儿媳时，她遇到了杀手大寒。经过生死考验，大寒走完了杀手的一生，桃花开来到大寒的家乡，教孩子们念书习字。For female employees in shopping malls, supermarkets and other positions who need to work on their feet for a long time, such as promoters and salespeople, the unit shall set up rest seats in their workplaces.　　人类在这个小小的行星（他们称之为“地球”）上，建立了两百多个不同的行政区域（他们称之为“国家”），直到地球上诞生了第一个会思考的机器人。Symantec Endpoint Protection 12.1.2 and later在温馨祥和的闯堂镇上，一场全镇居民期待已久的祈愿大会即将举行。闯堂兔和他的小伙伴们正在忙碌的准备着。就在此时，一个意外的发现让闯堂兔发现，似乎有一股黑暗的势力要破坏这场盛大的祈愿大会，更让人惊讶的是：这突如其来的危机，又与闯堂兔神秘失踪多年的父亲兔博士有着千丝万缕的联系。一段童趣荡漾而又精彩纷呈的快乐冒险就这样开始了……板栗无奈苦笑。