问题
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6,13,32,69,() A.121;B.133;C.125;D.130
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2,4,6,9,13,19,()A. 28 B. 29 C. 30 D. 31
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7 15 29 59 117 () A. 227 B. 235 C. 241 D. 243
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4,6,5,7,7,9,11,13,19,21,() A. 27,29 B. 32,33 C. 35,37 D.41,43
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2,4,6,9,13,19,() A. 28 B. 29 C. 30 D. 31
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1/15,4/35,7/63,10/99,()。 A.14/121 B.17/133 C.13/143 D.17/152