问题
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27 1 , 1 , 2 , 6 ,()A 21B 22C 23D 24
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:1, 3, 3, 5, 7, 9, 13, 15, (), ()。A.19,21B.19,23C.2l,23D.27,30
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1, 3, 3, 5, 7, 9, 13, 15, (), ()。A.19,21B.19,23C.2l,23D.27,30
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3,6,11,18,()。38A.23 B.25 C.27D. 29
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7,4,14,8,21,16,(),() A.20,18B.28,32C.20,32 D.28,64
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3,2,11,14,()34 A.18B.21 C.24D.27