????:1????????????:??98?

2?????????

3??????

4???????

5???????

?????????????1???8?? (????????????????? ?)??8??????,????????????????????????7??,?????????????

1?????????7?21?45???????????,?,?6?????,?2??????????????????????1??????8??2???,?????45??????????????????????????????????,??????

??????????????????,??,??????????????,???????????????????????,???????????????

??????,???????????????????????,??(????????????????) ???????????:???????