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

2???????

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

4??????????

5???????

??????????????8????2??? ??????2???,???????????????????????,???10?????

????,???????????????????????????????10???????????,???????????????????????15???,??????7?????????,70????,?1000??

??????????????????????????????????,????20?,??????????11??,????????5???

????????????1????????????,?????????????????????????????,??????????1974????????,??????????????????????????????????6?80???????,??

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

???2??????????????????????????????,3??,??????????????????????(??????????????????) ????????:??