304期：<<02,03,07,11,16,18,20,21,26,29,33,36,38,43,47,49>>开：21中中中
305期：<<04,05,08,11,14,15,17,22,26,29,30,36,38,40,44,45>>开：26中中中
306期：<<01,02,07,08,18,21,27,28,29,30,37,38,42,44,45,49>>开：15错错错
307期：<<01,06,11,16,19,20,21,22,24,30,34,38,40,41,43,48>>开：中？