1,5,7,17,()
A.29
B.31
C.33
D.37
:1,5,7,17,()A.29B.31C.33D.37
:1,5,7,17,()A.29B.31 C.33D.37
5, 3, 7, 9, 15, 23, ()。A.27B.31C.35D.37
2,1,5,7,17,() A.26B.31C.32D.37
3,5,7,9,13,15,21,23,()。 A.29B.31C.33D.35
1,5,7,17,() A.29B.31 C.33D.37