Let me explain the role of these classes: MySubject class is our main object, Observer1 and Observer2 are objects that depend on MySubject, and Observer1 and Observer2 must change when MySubject changes. The AbstractSubject class defines a list of objects to be monitored, which can be modified: add or delete monitored objects, and when MySubject changes, it is responsible for notifying the objects that exist in the list. Let's look at the implementation code:
远征决定回国了！一时间在二年和小夜以及大慈和小曼两家引起了"非常关注"，围绕着除夕之夜的年夜饭，两家人开始了一场嬉笑风波……故事的核心是强调"爱与真诚是战胜一切不幸的源泉"，戏中年夜饭的"新鲜"的吃法定会让现代人看后别有一番风味在心头。
《黄梅戏宗师传奇》是根据黄梅籍神话小说作家周濯街的小说《黄梅戏第一代宗师--邢绣娘传奇》改编。邢绣娘，生于黄梅县孔垄镇邢大墩，清乾隆黄梅县平民，自幼酷爱唱黄梅调。
刘能、广坤引领的象牙山全屯大脱单行动，最后到底能促成几对新人？
往那里一站，都是热点，都能引爆全场。
MyDoSth+=Print;
Explain the template method mode, which means: in an abstract class, there is a main method, and then define 1... n methods, which can be abstract or actual methods, define a class, inherit the abstract class, override the abstract method, and realize the call to subclasses by calling the abstract class. First look at a diagram:
去了学里，板栗跟夫子告假。
见过白三空书信的紫衣侯收留了方宝玉后，一行人悄悄潜回侯家老宅。宝玉不满紫衣侯对待自己的方式，偷偷逃走
A5.2 Recruitment of medical history, evaluation of examination methods and results, and identification of diseases
Please don't swallow it again
临场！这是真实的（？）新的派出所女子的故事！
CBS宣布续订动作冒险剧《#血宝藏# Blood & Treasure》第二季。
且不动声色，道：我再问旁人去。
花生玉米听了傻眼。
"Animals? Is it our common animal? Still can fly? What is that?"
What is a birthday note?
2. Testers
Article 6 The qualifications of fire-fighting facilities maintenance and testing institutions are divided into Level 1, Level 2 and Level 3, and the qualifications of fire-fighting safety assessment institutions are divided into Level 1 and Level 2.
