??�?????�

????:?????:?????

??2??????7??? ????,?(2?????6??????),???????????,?????????????????6~8?????????,?9~13??????????;?????????????????????????????????????????????????8?8?,?????????????????????????????6~8??????????,??????????12~16????,???

??(7????8???????????),??,???????????????????????????????6~8??????,???????????????10?????????????????;??4~6?,??????????????8~10?,????????????????????10?????????????

??,7????,?5~6????????????7~8???????????????????,???????????,???????????????9~10??;????????????????????????????9????????????????10~11?????8??????,??,?????

???????