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

?1???????22?? (????????????????????? ??)?????22??,????,?????????????????

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

?????????,23??????????27????,??,????,?????????????????????????????????????????????,?????3?8cm,???????????????????????????????????12cm??????

“??????”??,???????????????,??,??????????????????,?8????????12?,????????????,???????????????14??????????????????,???????????????4????????6????,????????????7??????????????????????9??????????????28??,????????????????????

??????,???????????,????????????????,??????24?????????27?,25???,???????????????,????,?,??(???????????????) ???????????:???