问题
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1/2,1,4/3,19/12,()A.118/60 B.119/19 C.109/36 D.107/60
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1/2,1,4/3,19/12,______ () A.118/60 B.119/19 C.109/36 D.107/60
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1/2,1,4/3,19/12,__________。 A.133/60B.137/60C.107/60D.147/60
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1/2,1,4/3,19/12,() A.118/60 B.119/19 C.109/36 D.107/60
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1/3,2/5,4/9,(),16/23,32/33A.6/13B.8/15C.10/17D.12/19
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1/2,1,4/3,19/12,()A.130/30B.137/60C.107/60D.147/60