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This chapter is the last lecture on design patterns. It will talk about the third design pattern-behavioral pattern, with a total of 11 types: policy pattern, template method pattern, observer pattern, iterative sub-pattern, responsibility chain pattern, command pattern, memo pattern, state pattern, visitor pattern, intermediary pattern and interpreter pattern. I have been writing about design patterns for a long time. At last it's halfway through, Writing a blog post is a very time-consuming thing, Because I have to be responsible for the readers, Whether it's graphs, codes, or representations, Everyone hopes to write it as clearly as possible so that readers can understand it. I think both I and the readers hope to see high-quality blog posts come out. Starting from myself, I will stick to it and update it continuously. The continuous motivation comes from the continuous support of readers and friends. I will do my best to write every article well! I hope everyone can give opinions and suggestions continuously and jointly create a perfect blog post!The people's governments of provinces, autonomous regions and municipalities directly under the Central Government shall, in accordance with these Regulations, establish and improve the supervision system of medical security funds to ensure the safe and effective use of medical security funds.红椒又叮嘱她们，明儿千万不能慌张，要跟秦溪今儿一样才好。外层空间的不明飞行物体将降落地球，专家们正在搜寻飞碟的降落地点。此时，一名电力公司的电线工人李察德瑞佛斯，在户外检查电力问题时， 竟发觉自己受到天空中异光的包围，从此他的心中就不停的出现怪异的景像、与5个奇怪的音符，为了解开这个不可思议的谜 ，他像着了魔一样，亲自与外星人作了第一次面对面的接触，并展开了一段外层空间之旅。那还用说，她肯定也要带走了。幸好江东缺马，否则后果不堪设想。