????:1??????????80:??????

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

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

4????????

5??????

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

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

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

???????????,????????

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

??,????,????“???”????“???????????????????”???????????????450???500????,??350??????

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

??????????????????,??????????????????????????????????????????????????????,????????,??????????“????”?????3.8?????????????????????????????????????,????????????????????????????,???????????????????,????????????

“???????????,????50%?????????????????????????27%???,????20%???????”??????,??????,?????,?????,?????????????“????????”

???????????????,???????“????”?????

??????????,?????????,??????????????????;

??,?,?????????????????;

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

???,??????????????,?????……

“????????????,??????????,???”??,??8??????????????????,?,???????????????,?????????“?????????????????”???????

??,???,?????,??,???,??,???,?????????“????????????????”,?????????“????????”??????????????????(????????? ???? ???) ???:?????