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

2?????

3??????????

4?????????

5?????????

?????????????6?????????20?? ????????????????????????:????19????????????

??????????????19???,????,???????15????17??,?????????

????????????????,?18??????????????41?????????,???????????95%????????,???????????????????????????,?,“???????????”?

?????????,????1800?????????????,???????

?,??????75%??,?,??????,????????????????,????????????????4??19?,??????????60??(?????????) ??:?????????