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

2????????

3??????????

4????????

5??????

???????7????????????????8?(??? ??? ????????????????)?????????,7????????????8???,?31??????,?????G56????????,?????????16?????38??

6??????????????????????24???20???????????15??????????????????,?,G56???,??????

???? ?

?????????,?????????,???????????????????????????????????,??????????“????+????????????”“?????????????????+????????”??,??,??????????????“24???+24???+?”??“??????????+?+??????????”??????“?????”????????????????

7???7???9?28??,??,????????????????,???

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

?????????????,?;?????????????????????????????????,?,????????????????????,??(??)

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