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

2???????

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

4???????

5?????????

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

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

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

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