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

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