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

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

???????????6??????11???? ??,???????6??11?????????10?????:??,6??????????11?14????????????????????12??????????14??,???????????????????????????????????????????????????????,?????,???????????????????????????????????????????(50~80??)????????????(????30~50?????????????,??70?????????),????

???????????

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

1??????;

2????????,?;

3???,?????;

4?????????????,???

?????:??