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Explain that in the OrderPizza method, we do a lot of things, including calling the CreatePizza method to generate a desired pizza, and then doing a series of operations on the pizza. The key point is that Pizza is defined as an abstract class, which means that in the OrderPizza method we don't care what type this Pizza is at runtime, in other words, this is decoupling. The coupling between PizzaStore and Pizza is uncoupled.《海南岛纪事》是旅游卫视推出的一档综艺节目，每期节目观众将跟随主持人的脚步一起探索海南岛的美食、美景，寻找各种好玩好看的事。大汗国派兵出征，军队意外带回小国王后（苏菲·玛索 饰）祖传的三色镯，一个侵蚀帝国上下的魔咒由此开启。The more originated from hunting activities. World shooting competitions can be traced back to the first Olympic Games in 1896.故事描述绰号「鬼魂」的主人公James St. Patrick（Omari Hardwick）不甘心只当一个小小的夜总会老板——他打算依靠自己的夜总会白手起家，在纽约城建立一个庞大的娱乐帝国并使之成为世界财富五百强企业。但是他面临一个问题：他除了白道身份之外还有一个黑道身份：一个大型贩毒集团中的大毒枭。当他计划离开犯罪世界专心做生意时，他的婚姻、家庭和事业全都受到了威胁，这迫使他不得不思考自己的人生道路。BY:http://www.mmys.net/Kan/21346.html二人一跑一追出去，吴凌珑叹了口气：没事，熬几天就好了。In the "Learning Power" client, besides updating reports involving General Secretary Xi Jinping in a timely manner like the website, there are also some special columns. Such as "using allusions" and "one sentence per day". On January 7, 2019, the "Daily Sentence" column focused on "Xi Jinping's Talks on How Leading Cadres Make Use of New Media" and excerpted a passage from his important speech on October 9, 2016 when he presided over the 36th collective study of the Political Bureau of the CPC Central Committee on the implementation of the strategy of strengthening the country through the Internet: "Leading cadres at all levels should learn, understand and use the Internet, and actively plan, promote and guide the development of the Internet. We should correctly handle the relationship between security and development, openness and autonomy, management and service, continuously improve our ability to grasp the laws of the Internet, guide public opinion on the Internet, control the development of information technology, and ensure network security, so as to continuously push forward the construction of a powerful network country. " Judging from the number of more than 100 messages and the number of comments from users on a single message, the overall reading volume of this column should be relatively high.