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

??

????1??????????27?? ?????,??????????1???????????27????6??????????????????????:

???????????1?????????????27?????????????8?28????????8???,???????????????????????????????????,????,?????????????????(20~26??);?5~10??????,??15???

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

??:

1.??????;

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

3.??,????,?;

4.??,???;

5.???

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

?????????

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

????????