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郑氏察言观色，轻声道：你先想想，也不是马上就要回复的。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.冯家菜是北京城里一家小有名气的淮扬菜馆，老板是个说话掷地有声，办事雷厉风行的南方女人冯大米。在数以百万计来京淘金的外乡人中，大米算是顺风顺水的，来京六年，从三张桌的小馆子做起，做到现在的三十张桌。店铺几次扩建装修，因为口味正宗、用料讲究，回头客络绎不绝。你身为张家儿子，该比谁都明白这个道理。浮舟亭悬浮在水中央，无路可通。左再骏与郑磊是大学好友，两个男人却有一个共同的八岁非亲生“女儿”妙妙。小檬是再骏与郑磊大学时代的爱慕对象，也是妙妙的妈妈，八年前，小檬去了美国留学后音讯全无。八年后，小檬再次出现，再骏有太多的不谅解，小檬用行动感动再骏，再骏终于同意让小檬将妙妙带回上海。回到上海后郑磊与小檬走的很近，再骏醋意大发，不久后也来到上海，两个爸爸成了情敌，各自展开攻势，笑料百出。再骏意外碰到大学同学孙妮，孙妮大胆追爱，小檬心生醋意却不敢正视内心。郑磊看穿小檬内心所属主动退出，并遇到了麻辣女警花童丹，童丹的率真开朗感动了郑磊。最终小檬的秘密被慢慢揭开，原来妙妙是小檬姐姐的孩子，当年的消失是因为她得病了，而如今更是因为害怕病情复发而不敢去爱，再骏的真诚告白感动了小檬，无论将来发生了什么，两人都决定坚定地走下去