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　　一年一度的春假到来，来自全国各地的大学生纷纷涌向度假胜地维多利亚湖，他们纵情歌舞，寻欢作乐。青年杰克·福斯特（史蒂芬·R·麦克奎恩 Steven R. McQueen 饰）追随友人来到海边。在电视人德里克·琼斯的邀请下，杰克和心仪的女孩凯莉（杰西卡·斯佐尔 Jessica Szohr 饰）等友人登上了德里克的游艇。在一个幽静的角落，女孩们尽情游水，享受美好的时光，却不知危险正慢慢逼近。The newspaper said: "The total number of cancer deaths in the United States showed a downward trend for the first time in 2005." "Cancer is a chronic disease that can be treated, controlled and even cured." In the past, it was believed that cancer would lead to death, and it would take less than three months. Now it is believed that cancer is a chronic disease that can be treated, and the treatment method will change with the change of understanding. The decline in the death rate of cancer patients in turn proves that this change of understanding is close to the right direction. Western medicine came from the West. At present, the number of cancer survivors in the United States is 1/29 of the total population, while that in Shanghai is only 1%, which is far from other places. This shows that Shanghai's understanding and treatment of cancer are still shrouded by the shadow of past mistakes. Many innocent lives still die under the wrong medical understanding and medical methods.The look after having been sun-cutIn 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.(2) The longer the programmer writes the code, the more personal things the programmer will add to the code.院。在波云诡谲的宫廷斗争中，他始终坚持医者救人的原则，从而得罪了严世蕃，甚至嘉靖皇帝；他还与制贩假药和迷信炼丹做了坚决的斗争。离开太医院之后，他以非凡的毅力和精神重修本草，编撰完成科学巨著《本草纲目》。等这事完了，表哥封个大大的红包给你。