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Right-click the meta-information-tick off the receiving shadow;Each object has its corresponding state, and each state corresponds to some corresponding behaviors. If an object has multiple states, there will be many behaviors. Then the judgment of these states and the behavior completed according to the states will lead to multiple conditional statements, and if a new state is added, the existing code needs to be changed. This kind of design obviously violates the principle of opening and closing, and the state mode is used to solve such problems.Telecommunications电台主持人于萍萍和丈夫李儒军结婚多年后因生活太过平淡无味而出轨，但她没有料到自己的出轨却给家庭带来了难以承受的后果，自己同丈夫李儒军的事业遭到沉重的打击，甚至因此而影响到了儿子李晓军的健康成长。发生的一切令于萍萍开始反省自己，最终幡然悔悟，意识到平平淡淡的真爱才是永恒，重新找回了昔日平淡但却幸福的家庭生活。 　 　 本剧深刻阐述了感情的专一对家庭稳定以及社会安定的积极意义，警示所有人要认真对待自己所拥有的感情，用心呵护自己所拥有的爱人。　　总统的女儿遭到绑架，政宇和基秀在追赶绑匪的途中受伤，载熙听到政宇受伤的消息后立刻前往意大利。随后勇冠等NTS要员公元2028年，人类遭遇了重大危机，一种无法抵御的病毒在全球肆虐，从而让人类陷入了末日浩劫之中。