????:1??????v:??qq???

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

3???????????

4??????

5?????????????

??????????12?????????20???????????????? (????????????? ????????????????)????????20?????,????????????????,???????????????????,???????????????????????,????4.8?,????

12????????????20???????????????,??????????????????????????????????

“?,?????,???????1000??????????????(???????,?????????????)??400???”????????????????,????????????,?3.76??,???130???????16?????????????,???????143????,??????????????173????,??????????????

??,???(????????),??????????????????????????????“????????????”??????????????????,????????????“?”?????“???????????123????,????????????????????”

??,??????????????7???,??4????????????????,???????????“?6-8?,??????????????,???????,???????????????”?????????????,??????83?,??????

???????,???????????????????????,????,?????????????????????,????5??????????,??700?????????????????????????,?????15??,????????????

“??????????????,???????,?????,?????????”??????????????,?????????????,???,???????????????,????,????????,?????????????????????4?????????????????????(???)

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