Junyi Academy is derived originally from Khan Academy, and derived from Chengzhi Foundation. More information about Chengzhi Foundation, you can find under: http://kistschool.org/. More information about Khan Academy, you can find under: https://www.khanacademy.org/.
長度: 45:26, 發表時間 : 2015-01-22 22:43 觀看次數 : 10,217
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