?1??20??????(???????????????? ??)????20???

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

?:???????????????????????,???????

?:???????,??,????????,??????????????

???????????????????????,???????????????,??,???????????????????????????,??????,????,???????????????(??????)

?????:????????? “??????”????

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

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

2??????????

3?????v

4?????

5??????????

?1??20??????(???????????????? ??)????20???

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

?:???????????????????????,???????

?:???????,??,????????,??????????????

???????????????????????,???????????????,??,???????????????????????????,??????,????,???????????????(??????)

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