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

2????????

3???????

4?????????

5???????wx

1?????22????????????,???,??????????,1?23?????27?,????,??????????????????????????????????????????,????????????????????????????????????????????3?8cm,????????????????????????12cm???????????????,??,?????????????,??,????????????,??8??????12?,?????????14?????????????,??????4????6???,????7?????????????9???????????????????????????1????????????26??????????27?,???????6?8??????

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

?:??????