A.14/19
B.7/9
C.13/21
D.1
[单选题]7, 8, 11, 7, 15, ( ), 19,5A.8B.6C.11D.19
[主观题]3/7,5/8,5/9,8/11,7/11,()A.11/14;B.10/13;C.15/17;D.11/12;
[单选题]3/7,5/8,5/9,8/11,7/11,()A . 11/14B . 10/13C . 15/17D . 11/12
[单选题]7,8,11,7,15,( ),19,5A.8 B.6 C.11 D.19
[试题]1/2,1,1,(),9/11,11/13A、2;B、3;C、1;D、7/9
[试题]1/2,1,1,(),9/11,11/13,A.2;B.3;C.1;D.7/9;
[试题]1/2,1,1,(),9/11,11/13A.2;B.3;C.1;D.9;
[单选题]1/2,1,1,(),9/11,11/13A .2B .3C .1D .7/9
[单选题]1/2,1,1,( ),9/11,11/13A.2B.3C.1D.7/9
[单选题]:2,3,5,7,11,( )。A.12B.13C.14D.15