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爱丽丝手托着下巴，神情专注，默默听着，听到动情处，不禁泪流满面…………(未完待续。In real life, China's income tax is divided into enterprise income tax, foreign-invested enterprises or foreign-invested enterprises income tax and personal income tax. For these three types of income tax, each is calculated in a different way. Personal income tax has a personal income tax calculation method, while enterprise income tax has its corresponding calculation method. If we do not adopt the policy mode to realize such a requirement, we will define an income tax class, which has an attribute to identify the type of income tax and a CalculateTax () method to calculate the tax. In this method, we need to judge the tax type and calculate the income tax for different tax types through if-else statements. Such an implementation can indeed solve this scenario, but such a design is not conducive to expansion. If the system needs to add an income tax in the later period, it has to go back and modify the CalculateTax method to add an additional judgment statement, which clearly violates the principle of "open-closed". At this time, we can consider using the strategic mode to solve this problem. Since the tax method is the changing part of this scenario, we can naturally think of abstracting the tax method at this time, which is also the essence of the implementation of the strategic mode.情节集中，所以两更一起发，稍迟了一点。开启童年模式 ，霸气外露白素贞，屌丝许仙，宅男法海，纯情小青演绎不一样的白蛇传传奇。本剧讲述白素贞与许仙婚后精彩无限的爆笑嘻哈生活。经过五百年的轮回，前作中《聪明伦文叙》中的明代状元伦文叙等人，一起穿越历史时空来到了现代社会，大家聚集在咸蛋小学。你听过一个有关警察、歌手、神经病和黑手党公主的故事吗？《猛禽小队和哈莉·奎茵》是一个只有哈莉·奎茵本人才能讲出来的超乎寻常的奇妙传奇。哥谭市最为凶残自大的恶棍罗曼·赛恩尼斯和他狂热的手下萨斯为了寻找一个年轻女孩卡斯，将这座城市翻了个底朝天。哈莉、女猎手、黑金丝雀和蕾妮·蒙托亚不期而遇，看似违和的四人组不得不团结一致、携手作战，才有可能打败罗曼。