B\u00e0i thi t\u1ed5 h\u1ee3p KHTN: \u0110\u1ec1 thi g\u00e2y \u00e1p l\u1ef1c l\u1edbn v\u1edbi h\u1ecdc tr\u00f2 v\u00e0 gi\u00e1o vi\u00ean?<\/a><\/blockquote><\/iframe>