2,3,6,8,8,4,()()
A.2
B.3
C.4
D.5
2,3,6,8,8,4,()A.2 B.3 C.4 D.5
2,3,6,8,8,4,() A.2 B.3 C.4 D.5
2, 7, 4, 8, 2, 6, 2, 2, ()。A.3 B.4 C.6 D.8
2,3,6,8,8,4,() A.2 B.3 C.4 D.5
2,3,6,8,8,()。 A.6 B.4 C.2 D.8