????:1?????????????:3????100?

2?????150????

3???????

4???????????

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

??????????????????????8???23? (???????????? ???)???????,23????????15?????????,???????“?????????????????”???????,???????7?????????????1???,???????????????10???????????????????40?????

8??????23??????????????????,?“?”??????,?7??1??,?????10??????????????????40?????????????

???????????,??,?????,??,????????????????????????,60??????1/3,18????20%????????,??????????????,??????????????,??????????????200?600??

???????????????????????“????????”??

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