??
???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??,????,?????????(?) ???:????
?????????
??????????????? ????10?????????????????????