V\u00ec sao \u0111i\u1ec3m x\u00e9t tuy\u1ec3n c\u1ee7a th\u00ed sinh b\u1ecb t\u1ee5t so v\u1edbi \u0111i\u1ec3m thi g\u1ed1c?<\/a><\/blockquote><\/iframe>