????:1?????????:??????

2????????????

3??????????

4?????????

5???????????

??????6???????????????21?? (?? ???)??????????????????????????????????????20??????????,?20??20?21?20??????,????????????????????????????????????????,??????????(????????????,???)?

6?20?,?????????

???,????????,?????????????,????????????,?(????,????????????);????????????????

??,????????6??20???14??,?????????????????????????????????????????????????????????????????????????????

???,6?????????????19??,19????????????8??20???????????????8??????????????,?????????????,???????????

?????,???,???????,?20????,????????????????;21??22????????,??

?????????????,20???1?,??????,????????????????????,??????????

??,???????????????????????,?????,?????????,??,????????,????????????,??,????(??????????????)

??:???????????????????????