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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.In the "Learning Massive Open Online Course" section, free video courses are divided into 5 categories, including social law, science, technology, agriculture and medicine, humanities and philosophy, politics and economy, and others, totaling nearly 200 courses. This includes 16 social law courses such as "Operations Research", "Tort Liability Theory" and "Communication Psychology". "Diagnostics of Traditional Chinese Medicine", "Antenna Principle", "Astronomical Exploration" and other 63 science, technology, agriculture and medicine courses, "Nine Lectures on the Essence of Marxist Philosophy Principles", "Guan Zhong's Management Thought of Chinese Famous Phase" and "Five Types of Poetic Life" and other 60 kinds of human history and philosophy courses, 15 kinds of political and economic courses such as "CPC Tax System", "Political Ethics" and "Corporate Finance" and 24 kinds of other courses that have not yet been classified, such as "Self-shaping: Five Elements of Success", "Gem Processing Technology" and "Cosmetic Appreciation and Application".13岁的霍莉·霍比和她的家人住在柯林斯维尔，这是一个风景优美的北美小镇，有着主要的街道价值。每一集都讲述了霍莉努力让世界变得更美好，同时应对成长中的日常挑战– 从欺负到突破，从镇压到宵禁。霍莉’第一季的主要任务是拯救苦苦挣扎的花布咖啡馆é 她和艾米（从两岁起就是最好的朋友）的关系受到了新来的女孩派珀的考验。霍莉是一位崭露头角的歌手/词曲作者，由霍莉（Ruby Jay，485k IG followers）演唱的朗朗上口的原创音乐将每一集联系在一起’霍利现场表演中的故事情节’我们在咖啡馆的公开麦克风活动é.普通人家出身但是非常优秀的奇诺颇受他所在的工厂董事长巴克的器重，董事长的女儿安蒂葳也倾心于奇诺。两人确定关系后，准备举行订婚仪式。然而就在订婚仪式当天，奇诺却和巴克一起被警察带走，原因是他们涉嫌一起违法走私案件。巴克的嫌疑很快被洗脱，但奇诺因为亲自签署了有问题的文件被送上被告席。真正的走私案主犯安特贝是巴克的亲侄子，工厂是他爸爸亲手创下的，他一直担心奇诺的存在会威胁到自己的地位，影响将来继承工厂，因此顺水推舟，指使两个同伙作伪证，又让律师从工厂利益的角度劝说奇诺，最终让奇诺揽下了罪责，进了监狱。原本就觉得自己配不上安蒂葳的奇诺，又因为坐牢的原因，打算彻底了断他和安蒂葳的关系。但是安蒂葳却相信奇诺是清白的，她在想办法帮奇诺出狱无果后，决定等他出来。只不过从奇诺入狱那一刻起，他们两人的命运就已经由不得他们自己了。诈骗无所不在。31