?? ??1000???????????????
????:1???????????:?????300??
2???????????
3????????????
4??????????
5?????????
????6?????15??? (?? ??????)??????14??????????????,??6?????????????12??,??????1000?,???,??????20??????????????
???????,?????????????????????,?,?????????????????????,????
????,???????????????,????“????????+?”?,??,???“?????”?????,??????“?????”?
??????????,?????,??????????“?????”,?,????????????????“??????”???????????????????(??) ?????:???