1,3/2 ,11/6 ,25/12 ,()A.133/60 B.137/60 C.141/60 D.147/60

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1,3/2 ,11/6 ,25/12 ,()A.133/60 B.137/60 C.141/60 D.147/60

1,3/2 ,11/6 ,25/12 ,()A.133/60 B.137/60 C.141/60 D.147/60
1,3/2 ,11/6 ,25/12 ,()
A.133/60 B.137/60 C.141/60 D.147/60

1,3/2 ,11/6 ,25/12 ,()A.133/60 B.137/60 C.141/60 D.147/60
选B
1+1/2=3/2
3/2+1/3=11/6
11/6+1/4=25/12
25/12+1/5=137/60