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

2???????

3???????????12????

4?????ppt

5?????

??11???27???? 11??27?,??????????????????????:????,????????“??????”??“????”,??“????”??“?,????????,???”;????“??”,??“????????????”,????,???????????

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

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