???:??????
??“????6??????”????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
?????????
??????
??????
??????
??????
??????
??????
??????
??
?????
?????
??
????:
1?????6??????:??????
2???????????
3????????
4???????
5??????50???
???:??????
????
6
%
???:??