??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??
???????????:??,??????????
???????????:??,??????????
??
????:
1???????100???:?????????????
2????????????
3????????
4?????????
5????????????
????
6
%
???:??