A. 19 , 21B 19 , 23C 21 , 23D 27 , 30
[单选题]:1, 3, 3, 5, 7, 9, 13, 15, ( ), ( )。A.19,21B.19,23C.2l,23D.27,30
[单选题]:1,3,3,5,7,9,13,15,( ),( )。A.19,21 B.19,23 C.21,23 D.27,30
[单选题]1,3,3,5,7,9,13,15(),()A . A:19,21B . B:19,23C . C:21,23D . D:27,30
[单选题]3, 5, 7, 9, 13, 15, 21, 23, ( )。A.29B.31C.33D.35
[试题]1,3,3,5,7,9,13,15(),()A:19,21;B:19,23;C:21,23;D:27,30;
[单选题]5, 3, 7, 9, 15, 23, ( )。A.27B.31C.35D.37
计算下面各题. (2)/(9)×(3)/(5)(6)/(7)×(7)/(9)(5)/(8)×(4)/(15)(9)/(20)×(5)/(21)(6)/(5)×(
[单选题]5,3,7,9,15,23,( )。A.27B.31C.35D.37
[主观题]4, 5, 7, 9, 13, 15, ( ) A.17 B.19 C4,5,7,9,13,15,()A.17B.19C.18D.20
按规律填数:15、11、13、13、11、15、9、17、7、()、()、21、3按规律填数:15、11、13、13、11、15、9、17、7、()、()、21