1 1/2 6/11 17/29 23/38 ()
A. 117/191
B. 122/199
C. 28/45
D. 31/47
-2,-1,1,5,(),29。 A.17 B.15 C.13 D.11
1,1/2 , 6/11 ,17/29 , 23/38 ,()A.28/45 B.117/191 C.31/47 D.122/199
3,6,11,18,(),38。A.23B.25C.27 D.29
5,11,17,23,29,()A.35B.38C.42D.60
5 11 17 23 29 ()。A.35 B.38 C.42 D.60
5 11 17 23 29 ( )。 A. 35 B. 38 C. 42 D. 60