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

2?????????

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

4???????

5?????????

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

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

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

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

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