?? ?????1????23??18???????:

??,??????,1???23????????????????20??1????27?????,?8~12?,???????14?????????????,???????????4~6??????????,?7~9????;26??27???????????,??6~8?,??9~11????28????????,??????0??????

??,1??23?20?1??25??????????????20????,??????????????????????8~10?,??????,?????????????????12????????5~7???????7~9????????????,??????????????????5~7??????8~10??

?:

1.?;

2.?;

3.???????;

4.???

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

??

??:???????????,??????????,??????????????