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

????:?????400?4??:???????????

????9???????????????????15?????????????? ????????75?14????????????????????????????????????????300????,???????75?,??????

9?????14??????????????,???75??????????????????????

????????????,??????????18????????????????????????????????????????????????????????????,??1989??????,???????????????1990??????100??,??????????????????????

?????,?????????,???,?,??????,????????????,??

9???????????14?????,???75???????????????????????????

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

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