????:1???????sn:????

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

3???????

4???????

5???????

?????8?19?????????????????????? (???? ? ????)19????,????(??)???????16??????????????

8??????19???????,?????????????????????(????)??? ?? ?????????

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

???????(??????????????????????)???????????16????? ?? ???????

?3????“????????”4?????8?????????16????,????????,???????8????????????,????????????5??????????,?3???????16??????????????????????????????????????5??????????????????????????????????

?????????,????«?(??)????»?

“????????(???)??????????,???????????????????”??????,???,???,??,???;????,???,?????????,???????“?”????(????)

??:????