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多年以后，当海霞回首往事，青春的记忆里最开心的日子是1984年国庆节，那一天是她20岁的生日。她和春妮还有李赛，三个不是亲姐妹却胜似亲姐妹的女孩子在天安门广场上参加了国庆三十五周年的大庆。烟火绽放在夜空，《二十年后再相会》的歌声回响在耳畔，海霞加入到集体舞的行列，尽情的欢笑着、旋转着，她祈祷着未来的每一天都能像这一天一样幸福、快乐。海霞从小都在春妮家长大，海霞的父亲和春妮的父亲徐树林原来都是一个村的，后来又一起进了国营大厂骄傲的当上了工人阶级……　　为了唤醒“失忆”的丈夫，夺回原本属于自己的爱情和幸福，善良的程桦屈身为安家第二十八任保姆，潜伏进再婚的前夫家中，稍不留神就会被设计、栽赃、甚至陷害等种种打击折磨着程桦的心智。所以兵力可能还不如龙且。Chapter VI Legal LiabilityIn 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.僵持之中，还是更有这方面经验的吴凌珑打了圆场，推了推沈悯芮道：还不快跟你姐姐问好。只是这份婚约到底是你情我愿，还是利益交换这个外人并不知晓。