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The above can be use as an extended match conditionIn 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.少年陈勇（李南星饰演）生长于破碎家庭，父亲是乩童、母亲改嫁，以致陈勇虽聪明却不爱读书，好勇斗狠，还结交了一帮不安于家的朋友。他听闻东海杨长帆竟敢献礼，本勃然大怒，但见了白鹿，看了那篇文采飞扬的《进白鹿表》，却立刻喜欢起来。按照编号，汪滶看上的那位扬州女子先行上前，这样的问题她自然是早已准备过的，以慈礼持家，以仁德辅王，高谈阔论一番，不疼不痒，标准答案。五月一日，是《倚天屠龙记》电视剧开播的日子。《深夜食堂》讲述了发生在一个小餐馆的故事，这里的菜单只有猪肉酱汤套餐一种，但是老板可以根据客人的要求利用现有食材做出各种料理，而且他还会和客人一起带出一个个充满人情味的故事。来小餐馆的有各式各样的客人，有黑社会份子，有没名气的演员，还有上班族和OL三人组。