6.25
6.5
7.25
7.5
1.3,5,5,6,6.5,( ) A、6.25 B、6.5 C、7.25 D、7.5
2.3,5,5,6,6.5,() A. 6.25 B. 6.5 C. 7.25 D. 7. 5
3.单选题3,5,5,6,6.5,( )。A 6.25B 6.5C 7.25D 7.5
4.3,5,5,6,6.5,( ) A. 6. 25 B. 6. 5 C. 7. 25 D. 7. 5