?????????? ????10????????

?2??8??????(???? ???)???????????,??8????

?8??8??50?:???????????,??????8????????9??,????????5???????????10????,???

??????5??????8???9????????????,???????????????

???????8?????,2???????????????8??????????~9????????????,?????,?8~11?,????????12~15?;??17~20?,??22~25??

????:??8?????5~6??????????7~8?,?????????????;8??~9??5~6???????????????????????7???????,?????????????????????;10??5????????6~7?,?????

??,???8?10????????IV??(???????):?,???????????????????????4.5~5.8???????????????????3.5~4.5??????????????????2.0~2.5????????????????????????????????2.0~3.4?????,??????????,??????????????(???) ????????:?????