????:1???????:????200????????

2??????????

3?????????

4???????

5??????150???

15?????????,??????,????????,????

1950??,???????????:“????????,?????????????,??”

1955??,??????????????:“????,?????????!”

???????“????,????”,?400?????????,??????????30????,???????????????“???????????????????”,??1963???????????????,???????80%????????

?????,?????22?????????????705?????????,??????

1981?????????????????1???????????????30?????,?????“??????”??????????????????,???1987?????????,??????

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

????????,????!

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

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

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