????:1???????:???????????

2????????????

3??????????

4?????400?????

5????????

??12????19????????????? ??,??,???????,??????????????????????????????????10?,???????12~15?????;???,??0???????????????????????,?????

??????,??????,???????????????????????????????????????????????????,????????????????????????????????????????????3~4?????0????????,??,??????,???

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

?????????19-21??????,??,?,???????????????????????????4~6?,???????2~4?,??????????????,????????????????????????6~8?,??10?????????????????????????4~5??,??6~8?????

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