????:1????????????:??????4?????

2????????

3??????????

4???????

5???????

???6??????????????12?? (?????? ??)?6??12???8??“????”??????9?,?????????«??»,??6??????12??8???????

??,12??????,?????????(?????????????????????????????????????)??(????????????)?????,?;???????,?????????????????????24??????50~80??,?150??;???????70???????????

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