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Factory Pattern: Factory Pattern is a frequently used pattern. Classes implemented according to Factory Pattern can generate instances of one of a group of classes according to the provided data. Usually, this group of classes has a common abstract parent class and implements the same methods, but these methods perform different operations for different data. First of all, we need to define a base class. Subclasses of this class implement methods in the base class through different methods. Then you need to define a factory class that can generate different subclass instances according to conditions. After getting an instance of a subclass, developers can call methods in the base class regardless of which subclass instance is returned.A) Studying the [design pattern] of GoF carefully and learning its intention and structure one by one is a way to learn English with a dictionary. Seeing mountains is mountains and seeing water is water, which may lead you to apply mechanically and imitate others in actual work.这是一个都市性感美女用宝盒满足欲望的故事。性感妖娆的物质美女胡蝶在朋友们给自己举办的22岁生日聚会上得到了一个神秘人送的宝盒。神秘人声称此宝盒能满足胡蝶所有的愿望，只要胡蝶把自己想要东西的名字写在卡片上放进宝盒里，愿望就会实现。此后，欲望爆棚的胡蝶先后写下各种自己想要的东西和钱财，而在她每次得到一样物质和钱财的同时也会伴随着一宗罪恶的发生，欲望不断递增罪恶就不断升级，罪恶的升级，连续的命案让胡蝶心理逐步走向恐惧自责的深渊，其实这一切最终都源于一场精心策划的阴谋……A2. 1.7 Neck examination.But then again, Even if it is not serious, It was splashed on my face, If left unchecked, His whole face must be the same as Jiang Yong's small arm, It's rotten, Because of the process of wiping his face, It is to give the others nearby a time to prepare, As his face began to blister, The deputy platoon leader kicked him, Knocked him sideways, Then I don't know whether it is instinct or realization. I think of a good way. The deputy platoon leader grabbed a large handful of floating soil from the ground and pressed it to the blistering position on his face. Then the above is "bang bang" emitting white smoke, But I didn't think there would be any miraculous effect, After the floating soil was "pasted" on it for a while, when it was cleaned up, it was found that Wang Yuanhe's face was no longer blistering, only a layer of skin had fallen off it, and there were several small round holes that could directly penetrate into his mouth. He opened his mouth to face the sunshine, and the sunshine could directly shine into his mouth through these holes, but the face was finally saved.素谨忙道：不要紧……田遥摇头道：素表妹该累了。