6??8?????????? ????????9~10?

??????2??????????????6? ?,??(2???????5???),????????????????????????????????????????????????????????7~9??????????,???????????????????????10~13?????????,?????????

6??????????8??????,?????????????,???????????????

??,?????????6~8?,??????????10???????;??4~6?,????7~8?,????10??????????8??????,????????0???????????????????????????????????,???8~10?,??12??????????????

??,?????????,?????4~6?????????????7~8?????????,????,???????????????????9~10?;?????7~8???????????????9~11?????????6?????

6??7??????????,??,???????????????????????,6??????7???,????,????;????????????????????

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