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

2????????

3?????300??400

4?????????????

5?????????

2????????????7????????????,????????????????A???,??

??????????????,???????????2?40????????????241?????8????A???????????????????????????????????????????????

?????????????????????,??????????????????????1500?????????,??2????????16?????????????538????????????????????????“???,?,??,????”???????,?????????

?????????????,??????????,??500?1000???

?,????????????500????;???????????1000?;???????1500????

(? ?? ????????? ?????)

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