青苹果水蜜桃

"Teacher, when I synthesize crystals, I need to find different conditions to synthesize them, but there are too many tests. Do you have any better methods?" "What do you synthesize crystals for?" "Of course, it is to test its performance." "Then why do we stick to the need to synthesize crystals before testing properties? We can test properties with the results of each time. Maybe we can find better substances, can't we?" "Ah! Yes, thank you, teacher, I'll try it!" In an exchange with Mr. Sun Yimin, the teacher proved once again the correctness of the sentence "Don't stick to books and documents" while solving the problems of the team members.正是这种置诸死地而后生的情况，激发了楚国将士的士气。The end of the article is very imposing, with calm and courage regardless:昨晚咋那么急哩？刘大胖子和刘家婆媳也都愤愤地瞪着他。队长罗杰是一个勇敢的小机器人，他和机器人数据机、液体机、整理机、修理机、垃圾机、制造机、大机器人一起组成了太空骑侠队。每个机器人都个性鲜明，也各有特长。每当收到地球的救援任务，队长就会派出一个机器人来到遥远而陌生的地方解决问题。不管任务多么困难，队员们总能轻松快乐的解决问题。该剧讲述了就像我的家人、我的邻居一样极其现实人物的日常故事。This is the basis of the opening and closing principle, and the specific content: interface-oriented programming, relying on abstraction rather than concreteness. When a specific class is used when writing code, it does not interact with the specific class, but interacts with the upper interface of the specific class.