????:1???????:???????498

2????????

3??????????

4??????

5?????????

????7??????17???? ???,??????10??(7??17-26???),????????????????????????????????????????????????,?????60~120??,?150~200??,?????????300????;??????3~7????,??1~2??

??????:

17-20??????????,?????????????????????????????????,??,????????????????????????,??????,?????????????

21-23???????,?????????????????????????????????????????????????????????????????,??????????,??

24??,????????????????????????????????????????????

21-24?,??????????????????

?????????????

?????????11-14?(7????????27-30?????????????),????????????????????????40~80?,???????100~150??

????

1??

20?????????,????????????????21???????????????????,????,??????????,?????????????????,?????????????,??

2???????

???????10???????,????????????????????????????????????????????????,????35~39?,??40????

3??????

??10?,??????1~2?????,???????1???

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