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

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

3?????????

4?????????

5???????

??????????????12????????20??? (??? ??)?20??,??3?,?????????????????“????????????????????????”????,???“???”???????????????,???“?”??????????66????,???500??(??),???????490??????????(??????????????),??200???

???????????????,?????????????????,????????????;??,?????????????????????,?????

????????????????,????????????,?“??”????????,?????????????????????“??”?????????????????????,??????????????????“??????????”???????????????????

??,??????,???“??????????”??????????,????????????????????????????????,??????,????????“???????”????,???“???”???(????) ????????????????:???????