A . 30
B . 31
C . 32
D . 34
[试题]5,17,21,25,()A.34;B.32;C.31;D.30
[单选题]5,17,21,25,()A . 34B . 32C . 31D . 30
[单选题]35,7,5,( ),25/7。A.1B.7/5C.3D.5/7
[单选题]7, 9, 1, 15, -5, 21, ( )。 A.36B.-11C.13D.27
[单选题]7, 9, 1, 15, -5, 21, ( )。A.36B.-11C.13D.27
[单选题]1,1,3,3,7,5,13,7,21,( )。A.9B.11C.8D.22
[单选题]28,-7,27,21,25,-63,(),189,13A.22B.21C.24D.-26
[主观题]28,-7,27,21,25,-63,(),189,13A.22 B.21 C.24 D.-26
[单选题]4,6,5,7,7,9,11,13,19,21,( )A. 27,29B. 32,33C. 35,37D.41,43
[单选题]4,6,5,7,7,9,11,13,19,21,( ),( )A.27,29B.32,33C.35,37D.41,43