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???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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