小学数学说课

视频简介

Ukrainian surgeon Serhiy is captured by the Russian military forces in the conflict zone in Eastern Ukraine and while in captivity, he is exposed to horrifying scenes of humiliation, violence and indifference towards human life. After his release, he returns to his comfortable middle-class apartment and tries to find a purpose in life by rebuilding his relationship with his dau...。新型冠状病毒疫情席捲全球，一众是非精联同多名学者、达人向观众拆解「抗疫是与非」！全城抢购口罩，扑得到亦要戴得好，怎样正确配戴口罩？口罩又能否自行检测及製作？市面难以入手的清洁、消毒用品，教你在家轻鬆DIY。病毒潜藏身边，马桶、升降机按钮、门柄、手机、键盘、衣物随时含菌量超标，应如何大清洗？身为是非精，当然还要明辩抗疫谬误，提高大众对防疫的意识及知识，共同抵抗疫情！。