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

2???????

3??????

4???????

5??????????

???????????6????????18?? ??????,?16????,????????????????????????,?????????4???,12????

???,?,???180?????????

???????????????,???,???,???,????

????,??,??????????

??????????????:“??????????????,???????????,????,???”???????????,????????????????????????????12???????????????????

?????,???????????10?????????11??????????????,?????????,??????9??????????,?????? ?????????:?????