?? ?4????????????20?
????:1???QQ???:?????????
2???????????
3?????????????
4????????
5???????
??2???????????13? ?????????????????????13?,???,??????????4????20???
???????????????????????????,????????11???????????????33??????????,?,?????????????????
?????????????????????????????,??12???????????????,?????,??,????????????
??????,??????????????,??????????(?????????????????????) ????:????