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

2???????

3??????

4?????????

5???????

???(?????):???????????????(10?????????12?)???,???,?????????????????5???????

???23???,?????30%????????????????,?????????????????????????????????????10????????,?????????????“??”?

???,?????????????7????,????1200????????????,???????????27?????42???70??????80???,????????????40???2????????????10???7??42?????????????

??,???????????????????????,???70%??,?13????????????????? ?????????????????:???