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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.……传媒大学，教室的讲台上，一个颇为儒雅的中年教授正在滔滔不绝的讲着。一场严重意外让班（Pablo Pauly 饰）进了复健中心，连洗澡、更衣、走路都无法自理，遑论上场打他最爱的篮球。班在中心里认识的新朋友皆是四肢瘫痪、下肢瘫痪或创伤性脑损伤的重度身障者，一群人被生理障碍折磨到精疲力尽、互相谩骂却又彼此提携，并一同学习耐心的重要。他们挣扎着踏上「重生」之路，经历一段混杂成功与挫败、泪水与欢笑的旅程，途中结识各式各样的人——痊愈，并非孤军奋战。平日守礼，遇见黄少爷摔伤那种情形，又能事急从权，不避嫌疑，以救人为重。"Yes, Common carnivores, Whether it's a dog, Wolf, or the dog teeth of lion and tiger, They are all tapered sections, With a tip in the front, But this kind of thing is different, All of their teeth are the same, All of them are inverted triangles, And very thin, Both sides are like knives, It was all 'open-edged'. It was very sharp and very hard. When I pried its mouth with a dagger at that time, after priing it open, I could find many thin but obvious scratches on the blade of the dagger in the face of the sun. The dagger I used was made of steel. It was really surprising to me that the teeth could leave such marks on it. "Zhao Mingkai said.青春校园系列剧《丑小鸭成长记》是一部反映北京高等艺术院校生活的电视剧。讲述的是艺术院校表演系的未来之星们从丑小鸭变成白天鹅的成长故事。曲折和坎坷之后，他们终于通过自身坚持不懈地努力和永不放弃地坚持如愿以偿成为北京电影学院表演系的一员。