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Having evidence-based medical basis (e.g., reference to tumor diagnosis and treatment guidelines);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.春秋战国诸侯纷争、民不聊生，齐国君王好大喜功、迷恋酒色、荒废朝政。齐后钟无艳被齐王幽禁冷宫，并对夏迎春愈加宠爱，对降将魏文斌信任有加。未想魏文斌同夏迎春谋反，多亏钟无艳窥破先机，不计前嫌解围救驾。齐王悔不当初，亲自接钟无艳出冷宫，但钟无艳因为儿子失踪心结，二人始终不得真正和解。魏文斌、夏迎春灭齐之心不死，奔逃至楚国求援，楚王听信谗言，又挑起战端。钟无艳为免百姓遭殃再临战场，攻燕伐楚势不可挡，在征战中找回了亲生儿子。钟无艳帮齐王指挥军队，抵御外强，辅佐齐国一代王者安邦定国。In fact, the appearance of interactive game APP products for children's thinking ability was earlier than that of online class products, such as Wukong Mathematics, Dudu Mathematics and Yangyang Love Mathematics, which were all introduced to the market around 2012. However, due to the limited market demand environment at that time, they failed to achieve explosive development.四周聚满了亲人，这才问爷爷奶奶一路上可顺利。秦涛被吓了一跳，一脸无辜地看着两个姐姐：生病了、受伤了，不得吃药？他就算怕苦，也是不敢不吃药的，不吃药怎能好呢？二师姐刚才还说躺在床上闷呢。心里都有一种怪怪的感觉。