???????? ?????????????

??

??????????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?,????????,?????????????

????????

7??????,????,??????????????????????????

??,7????8?,????,????????;???????????????????,??????7????,??????????????????

????????,????????,??,???,??????????????????????????,??,???????,??????????,??????????????,????,??,?????????????????????????

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

?????????

????????????? ????????????? ?????

????????