问题
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17,18,22,31,47,() A.54 B.63C.72 D.81
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0,7/3,22/5,45/7,76/9,()A.12 B.13 C. 106/11 D. 115/11
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0,7/3 ,22/5 ,45/7 ,76/9 ,()A.12 B.13 C. 103/11 D. 115/11
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.0,7/3 ,22/5 ,45/7 ,76/9 ,() A.12 B.13 C. 103/11 D. 115/11
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6,13,22,35,54,81,()。A.115B.117 C.118D.116
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2,7,13,22,36,57,()。A.58 B.87 C.93 D.115