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

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

3???????

4???????

5???????

????11????????????????????????23??? (??? ??)23????,?????????,“?”???????????,????????????,???????????????,?,???

??:“??,????‘?’,???‘??’???‘????’,?????‘???????????????’?????????????,??????????,23????8????????,???????????,???”

??,??,?????,?????????????,???,????“??????????”??“???”?????????,???7.52????????????,???????????????9.69????????????

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