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

2???????

3?????

4????????

5???????600

?????????12??????19????????? ???????,?????????????,????,????????????????????????????????10?,??????12~15????????;??,????0?????????????????????????????,???????????

??,????,???????????????????????????????????,?????????????????????????????????3~4????0?????,?,????,???????

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?19-21??????????????,???????,????????????,??????????????????????4~6?,??2~4?,????,????????????6~8?,???????10?????????????????????????4~5??????????????,????????????6~8???

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