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西蒙是个头脑慎密，心狠手毒的恐怖分子。他为了窃取联邦大厦地下金库的黄金，想方设法分散警力。他先是制造了一起爆炸案。在警方紧张破案之际，他又给警长约翰·麦卡伦打了电话，声称警方必须听从他的一系列指令，否则他将继续在全市搞爆炸活动。要是直接自立，这个齐王之位也能稳稳地坐上去。都已经以社会人的身份生活，成为了正经的大人。Provides an interface to create a series of related or interdependent objects without specifying their specific classes.《屠龙记》是台湾电视剧《包青天》（1993版）系列里的一个故事，系第二十单元，共8集（103-110集）。讲述了一对难兄难弟为自己最爱的人异国冒险，却意外卷入帮派斗争，置之死地而后生的故事Each object has its corresponding state, and each state corresponds to some corresponding behaviors. If an object has multiple states, there will be many behaviors. Then the judgment of these states and the behavior completed according to the states will lead to multiple conditional statements, and if a new state is added, the existing code needs to be changed. This kind of design obviously violates the principle of opening and closing, and the state mode is used to solve such problems.