4,5,7,9,13,15,()
A.17
B.19
C.18
D.20
4,5,7,9,13,15,()A.17 B.19 C.18 D.20
4,5,7,9,13,15,______ () A.17 B.19 C.18 D.20
12,10,14,13,16,16,(),() A.14,18B.20,19C.18,19 D.15,18
4,5,7,9,13,15,() A.17 B.19 C.18 D.20
4,5,7,9,13,15, ()。A. 17B. 19C. 18D. 20