????:1??????:??????

2??????????

3???????????

4?????????

5??????????

?2??8??????????????? (???????????????? ?)2??????8?11?????????????????50?????????,?????,????????8??????????????????????????,?????????

????????????????,???????????????????,??????????,??????????????????????2??8??19????,??2????????,????

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

??????????,?????????2??,????????????????????????????????????????,??????,?????8??18???,????????????????????????10??30?????,???200????????????(??????????) ??????????????????????:???