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

2??????

3?????

4?????????

5??????

???11??2????? (??? ?)????2????,??????“?????”?,?????11??2?????9??????16????23????,???

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

????????,???:90???????,????300??(???300???????50);150???????,???????????????500?(?500????????????100);240???????,?800???????????????(???????????????800???200);300??,????1000?(?1000?300,????)?

??10??14????????????????,“????????????”?????,?????????3.6??????????,????????????,????9???????????????28???11?????,???????,?1.8??????(??) ??:???