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

2?????????

3?????????

4????????

5????????

12?????27??,????????????23??????????“????????????”?????,“??????”???“???”?????

??,?????????“??”????????“????”???????“????”????????,??????????????“???+???”?????,????“?????”????????????,???“??????????????????”?????(????? ? ???? ????????? ???????????)

????:????