??
??1???27?? ????????,?1?27??????????10??:
?,1?????????????????27??????????14??1???????????????28???????14??????????????????????,????????????????,???????????(20~25?????????????);?5~15??????????,????15???????
????????:??????:
1.??;
2.??????????????????????????????????????,???????;
3.??????,?,??????;
4.?,?????;
5.???
??:?????????????????????
??????????1?27???????????10??????????????