?? ????????????????? ?????????????????

????:1?????:????????
2?????????
3???????
4??????v
5???????
?2???????21???????????? ????,????,??????????????????????????????,????????????????????????????????????????,??,???????,?????????
????
?,????????????????????????????,??,????????????????????????????????????????????????6~7?,??8~9???
?????????????
?,???????????????????????,??????,????????????????????????????????,???
?????????????
2????21??8???????????????????22??????????????8???????????,??????????????????????????????????????????????,??,????????????????????????????????????????,??????????,?????????????????????4~5???

2?22????????8????23?8?????,????????????????????????????????????????????????,??????????,???????????????????????????????????????????????????????????????,???

2?23??8??24?8??,???????????????????????,?,????????????????????????????????,?,?????????4~5??

