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Source of decimal system: Legend has it that it is ten fingers and two feet. This was stipulated in the past, and now it is stipulated that there are 10 dozen per dozen.Today, the two female reporters of the NPC and CPPCC took the screen by surprise, which is really a long story. However, in recent years, in order to gain the opportunity to interview the NPC and CPPCC, female journalists have indeed emerged one after another in robbing news.A class has only one instance and instantiates itself and provides this instance to the entire system.别走。故事讲述数学小天才罗克穿越到由数学博士Y统治的数学荒岛，并利用数学知识帮助大家与“黑暗统治”做斗争的故事。You can experience the difference between the following names. In fact, it is only the difference between names, and the subtle point is only the pronunciation. But the meaning is not very clear. Curry and Nash are both basketball players and Spielberg is the director.