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第二天上午，陈启还在睡懒觉，就听到手机响了。The basis is very simple. That is, the card surface attribute + weapon attribute is the basis.It is very important to solve the problem of waste packaging and promote green express delivery. On the one hand, at the source, it is necessary to formulate industry standards and packaging material standards to promote more environmentally friendly packaging materials; On the other hand, it is also necessary to strengthen recycling at terminals. For a single individual, the discarded express packages may be dozens of woven bags and packing boxes, but when the whole society comes together, the number of discarded woven bags and packing boxes can reach an astonishing billions in a year. If every individual covets convenience and labor, discarding it and throwing it away at random, it will not only cause waste of resources, but also bring pressure to subsequent garbage disposal and even cause environmental pollution. It seems that the society pays the bill, but in the end it is everyone living in this society. Green life requires us to practice it together.板栗和小葱都点头。周星河直到现在，才知道这部剧原来是大导演赵守正执导拍摄。两条河流，平静的新加坡河和汹涌的鹿特丹玛士大河，横卧在南洋和北欧，隔着浩瀚无际的太平洋，讲述着三段未了的情缘和四个破灭的梦。　　受伤的是两个女孩，一个死在深爱的人怀里，带着对人世的无限眷恋。一个远走他乡，带着对旧爱的追忆感伤。悲哀的是两个男人。一个陷入两难的抉择内心写满悔恨。一个怪因缘太浅错过了真爱。这四个破灭的梦遗憾多过甜蜜，残酷胜于缠绵。　　他叫李开朗，是个警察，曾经做过一个天真的梦，有一个自己的家，不需要太大，只要够放一张床一张桌子。白天同桌而坐，晚上同床而眠的，是马路对面那个卖糕点的清纯女孩。他要娶她，握着她的手度过一辈子。　　他叫李家乐，是个学生，还没到做梦的年纪，但他会永远记得那个中秋节的新加坡河，找了一个蹩脚的借口去看一个女孩。新加坡河边开始下雨，躲雨的时候，他用月饼盒为女孩做了一个灯笼。女孩对他笑，给他一张纸条，那一笑让他终身难忘，那张纸条他小心收好。他也想到过长大以后要娶她，马路对面那个卖糕点的清纯女孩。　　李家乐的梦破灭了，打破这个梦的恰恰是自己的哥哥--李开朗，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.