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

2????????

3?????

4??????????

5????????

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

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

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

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

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