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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.1940年5月，在墨西哥城郊区，一支穿着警察打扮的墨西哥共产党士兵袭击了俄国革命前领导人Leon Trotsky的住宅。一刻钟，他们向房子开枪，但令人难以置信的巧合是，托洛茨基和他的妻子幸存下来。在斯大林十一年的驱逐中失去了几乎所有的亲人，托洛茨基明白：他永远的敌人，他将继续追捕他直到他生命的结束。逃跑是可能的，但不是逃避。托洛茨基决定战斗。但他的武器不是子弹，而是文字。他想留下一份政治遗嘱，第一次完整而真诚地讲述一个犹太年轻人如何成为新世界的先知并摧毁最大的帝国。为了写回忆录，他邀请了他的思想对手——一位同情斯大林的加拿大记者——把他转变成他的信仰，这样他就可以改造整个人类…666, congratulations延续《云端》第一季的故事。 消失多年的知名悬疑小说家黄蝎（罗康饰）携惊人秘密归来，张言的好兄弟、好老板郑雄（江奇霖饰）将以全新的特殊身份“重置”这场游戏。影片讲述了《聊斋》中书生陶望三与两个女鬼之间的一段离奇故事：陶望三在为亡母守孝的最后一天遇到女鬼，幸得道士全矶子相助才得以保命，并送其一卷可保不受鬼怪侵害的经书。由于旧居损坏，陶望三暂住好友姜部郎的一套据说闹鬼的老宅中，结识了落水身亡的女鬼小谢和为救小谢身亡的秋容与三郎，四人相处愉快，其乐融融。　　小菲是个“戏疯子”，虽然没有受过正规的训练，但颇有天赋，一登台便忘乎所以地全身心投入，很快就名声大噪，旅长都汉爱上了她并想娶她。都汉能够给小菲许多女孩子都艳羡的地位、权势，然而小菲却并不看重这些。因为她已经不可遏抑地爱上了“集狷狂、柔弱、放荡不羁、细致入微于一身”的政治干事欧阳萸。她要和欧阳萸这样的男人诗意的恋爱，浪漫的生存。