问题
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1,1/2 , 6/11 ,17/29 , 23/38 ,()A.28/45 B.117/191 C.31/47 D.122/199
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12,19,29,47,78,127,()A.199 B.235 C.145 D.239
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12,19,29,47,78,127,______ () A.199 B.235 C.145 D.239
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12,19,29,47,78,127,() A.199 B.235 C.145 D.239
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12,19,29,47,78,127,()A.199B.235C.145D.239
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12,19,29,47,78,127, ()。A. 199B. 235C. 145D. 239