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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.《人活一张脸》中的“脸”其实讲的就是人的尊严。本剧全景式地呈现出中国改革开放以来普通老百姓人生价值观、道德观的蜕变与发展。该剧以一个普通家庭在历经三十年变迁中的遭遇来透析世态人情，通过一家两代人对生活、现实、金钱、爱情等等观念在不同时代不同命运下的喜怒哀乐，冲撞妥协，从而折射出大千世界的冷暖情怀，揭示了人性中卑劣和善良的多重性。 贾裁缝和潘凤霞共有三儿一女，一家人过着普通而自足的生活。故事从一九七八年恢复高考开始，四个儿女经历高考的录取和落榜，从而走上了不同的生活道路，通过结婚、工作、子女等许多现实生活中遇到的问题而不断产生矛盾。 随着自由市场的开放，老大所在的锅炉厂效益越来越差。老三因为一个意外的机会而走上经商的道路。出于好心，老三想帮老大的工厂推销滞留的锅炉却没想到被骗了。全家人在母亲号召下，有力出力有钱出钱。在困难和诚信挑战面前，他们一家人携手承担。 贾家四兄妹闯荡人生的过程中，贾家父母始终伴随着他们，靠勤劳、厚道最终赢得了社会的承认，得到了真正的尊严。平淡而又不平凡的生活告诉我们《喋血边城》是一部讲述辛亥革命时期发生在竿城凤凰的悲壮历史故事，全方位展示了湘西的地域风情，彰显了湘西人特有的坚贞不屈的品格，充分肯定了湘西人民在中国革命历史进程中做出的巨大贡献。Originated in the Swiss Alps, it is a winter sport that takes wooden or metal skateboards to slide and turn at high speed on special ice and snow routes. It is divided into two types: sled with rudder and sled without rudder.尹旭朗声道：不过我还是要声明一点，我尹旭不会为了利益而口是心非。Why does the cultivation of children's thinking ability become the darling of capital? Why does the heat of investment and financing not decrease when the capital winter comes?