问题
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1/4, 2/5, 5/7, 1, 17/14, () A. 25/17 B. 26/17 C. 25/19 D. 26/19
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:1,1,2,3,5,7,(),() A.14,17B.13,15C.12,15D.14,16
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1,1,2,3,5,7,(),() A.14,17B.13,15C.12,15D.14,16
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1,1,2,3,5,7,(),() A.14,17B.13,15C.12,15D.14,16
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1/4,2/5,5/7,1,17/14,()A.25/17 B.26/17 C.25/19 D.26/19
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1,1,2,3,5,7,(),()。A.14,17B.13,15C.12,15D.14,16