A.1/5;B.1/17;c.1/22;d.1/9
[单选题]2/3,1/4,2/5,(),2/7,1/16,A.1/5;B.1/17;C.1/22;D.1/9;
[主观题]-1/7,1/7,1/8,-1/4,-1/9,1/3,1/10,()A.-2/5;B.2/5;C.1/12;D.5/8;
[单选题]:2/3,1/2,2/5,1/3,2/7,( )。A.1/4 B.1/6 C.2/11 D.2/9
[单选题]2/3,1/2,2/5,1/3,2/7,( )。A.1/4B.1/6C.2/11D.2/9
[单选题]-1/7,1/7,1/8,-1/4,-1/9,1/3,1/10,()A . -2/5B . 2/5C . 1/12D . 5/8
[试题]2,1,2/3,1/2,()A、3/4;B、1/4;C、2/5;D、5/6;
[试题]2,1,2/3,1/2,()A、3/4;B、1/4;C、2/5;D、5/6;
[单选题]1/5,1/3,3/7,1/2,( )A.5/9B.1/6C.6D.3/5
[主观题]2/3,1/2,3/7,7/18,()A、4/11;B、5/12;C、7/15;D、3/16
[单选题]1/4,2/7,2/5,8/13,1( )A.9/16B.3C.32/19D.28/17