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

2???????

3???????

4?????????

5???????

??10??30??? (?????????????????????? ?????)?(????????“?”)????????????30??????????????????????????????????????15?????????,??(?“??????????”)??????????????,??,???????????“???????????”?

????????? ?????????

????????,?????????????,?????????20???????????,15???,???????????????“??”?

“?????????????????????20?????????????????,????,????????????!”????,????????????????

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

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

??,????????,?????????????????20????????????,??“??????”,??????????????????????,???(????????????)

????????????????:???