2,5,11,20,32,( )。
A.43
B.45
C.47
D.49
32, 48, 40, 44, 42, ( )。A.43B.45C.47D.49
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2,5,11,20,32,( )。A.43B.45C.47D.49
:2,5,11,20,32,( )A.43 B.45 C.47 D.49