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

2?????150

3??????????????

4???????

5?????

???2?7???????????(?????? ??????????????????????????????)7?????,??????????????????????????????A?????,????????

7?,?????? ????????????? ?????

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

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

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

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

?????:???