?? ??????????????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.??

??:???

??

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