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

??

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

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

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

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

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

?????????

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

????????