1,2,3,10,21,()。
A.110
B.90
C.43
D.63
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1,3,5,11,21,()A.25 B.32 C.43 D.46
1,3,5,11,(),43 A.18 B.21 C.23 D.25
1,3,5,11,21,() A.25 B.32 C.43 D.46
1, 2, 3, 8, 21,46, ()。A.70 B.87 C.90 D.100
1,2, 3, 10,21, ()。A.Il0 B.90 C.43 D.63
1, 2, 3,8, 21,46, ()。A.70 B.87 C.90 D.100