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手术台上，林峰闭上双眼之前对莫小妍说了句“我爱你”。许久之后才问道：这些都是谁的主意？迫人的威严让曹无伤为之一震，回答道：应该是张良的主意，之前子婴投降时，刘邦和诸将一直兴奋不已，兴高采烈地进入关中。The main rules of the competition are:Other levels also include level 2 and level 3, which are distinguished according to safe flight time and technology accumulation.If I were to implement a pizza ordering system, I would definitely write the code like this, because this kind of code can be written subconsciously without consuming our brains. However, take a closer look at this code: the purpose of this method is to order pizza. However, the code for ordering pizza also needs knowledge about the production of pizza. This method must know all pizza. Worse still, if the types of pizza are to be expanded or pizza with poor sales volume are to be deleted in the future, then the code for ordering pizza will be modified. It looks very bad and should be revised. Our first step must be to separate the code for producing Pizza from the code for ordering pizza, because you should not let the code for ordering Pizza know the logic for producing pizza, but should hand over the logic for producing Pizza to a special type. In this way, we can cope with future changes-if we want to add or delete pizza, we can directly modify the producer of pizza without affecting the logic of ordering pizza.没事。