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C. Non-conformities.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.From the moment the activity entered the final preparation, I deeply felt the strength of unity. We work together to prepare lessons, we rehearse carefully, and we encourage discussions. All this is "we", not "I". This is what team cohesion and team spirit should be like. There are always many challenges and difficulties for the 18 players to deal with strange people in strange places. However, when the wisdom of the 18 players is integrated, any problem can be solved. Unity and mutual assistance, difficult challenges, this is the main theme of this activity.其他人倒是还好说，唯独范文轩身边那个眉目含春的少fù，脸上有些不大自然了。黎水一概不理，就在这时候，她看见了黎章，不禁眼睛一亮。不知道的人看了，还以为他们是一家子。