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

2???????????

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

4???????

5???????

?????2????8??? ????????:???7??,??????????????????,????????????????????“???”??????

?????????????«????»7??????,????????????,?,?????

?,???????????????,?????????????20%????????(??????????????????50%?????)?????????,???????,????????

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

???????????????????7????,??,????????????????????14???16????????(???) ??????????:????