285期:必出单双===>>>单数<<<===开21准

286期:必出单双===>>>双数<<<===开45错

287期:必出单双===>>>双数<<<===开40准

288期:必出单双===>>>单数<<<===开26错

289期:必出单双===>>>双数<<<===开04准

290期:必出单双===>>>双数<<<===开00准