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When "cracking" the sand pile paradox, we often have to set a fixed boundary. If we say "10,000 grains of sand are a pile of sand", then less than 10,000 grains of sand cannot be called a pile of sand. Then it is somewhat unreasonable to distinguish 9999 grains of sand from 10001 grains of sand. This has to set a variable boundary, but what is this boundary? We don't know now. Then the value of "10,000 grains of sand are a pile of sand" originally set as knowledge will be reduced.汉弗莱迪古德曼和他的团队正在解决越来越多的令人费解的谋杀在圣玛丽的美丽的岛屿——从身体上火山两部分的故事,需要团队去伦敦。但它不只是令人不安的汉弗莱的犯罪——作为他和玛莎花朵的关系,将真爱之路顺利进行?同时团队关心中士佛罗伦萨卡塞尔被发现死当一个老朋友。德维恩被迫面对自己的过去,摩根大通转向德维恩结婚但自古民不与官斗，就算咱们告了，这些刑法也只会落到胡镇的奴仆身上。倭寇倭寇，倭人终究只是工具，几个中国人之间斗争的工具。当一个特立独行的哥哥重归故乡后，家族成员们发现他们过往的秘密和伤疤逐渐被揭开。铸剑大师欧冶子舍生取义，帮助正直淳良的青年干将前往楚国铸剑，并借机刺杀穷兵黩武的无道暴君。而干将与莫邪的爱情经历了阴谋与误会的考验，也更加坚贞不渝，富于传奇色彩……干将被楚王杀害后，莫邪带着儿子眉间赤隐姓埋名、忍辱偷生。十八年后，在爱人青萝君和母亲相继遇害之后，赤知道了真相，燃起 了复仇的勇气。亦师亦友的山中客，目睹了赤的遭遇，决定帮助赤完成复仇…… In the second episode, Sheng Qing, a teacher from Fudan University's School of International Cultural Exchange, and Gu Chen, a lecturer in Chinese as a foreign language from Shanghai University's School of International Exchange, were invited to recall their college entrance examination experiences in 1987 and 1997 in the 10 and 20 years after 1977. This paper reviews and discusses the development process of major measures in recent years, such as the expansion of college enrollment, the reform of higher education, student loans, college-based general education, and the independent employment and entrepreneurship of college students.