A.15
B.13
C.12
D.11
[单选题]2/5, 3/7, 4/10, 6/14, 8/20, 12/28,______ ( )A.224/56B.14/32C.20/48D.16/40
[单选题]2/5,3/7,4/10,6/14,8/20,12/28,( )。A.224/56B.14/32C.20/48D.16/40
[单选题]2/5, 3/7, 4/10, 6/14, 8/20, 12/28, ( )A.224/56B.14/32C.20/48D.16/40
[单选题]2/5, 3/7, 4/10, 6/14, 8/20, 12/28, ( )A.224/56B.14/32C.20/48D.16/40
[单选题]-2,14,6,10,8,( )A.4B.7C.9D.10
[单选题]-2,14,6,10,8,( )。A.4B.7C.9D.10
[单选题]-2,14,6,10,8,( )。A.4B.7C.9D.10
[单选题]-2,14,6,10,8,( )。A.4B.7C.9D.10
[单选题]-2,14,6,10,8,( )。A.4B.7C.9D.10
[单选题]-2,14,6,10,8,( )。A.4B.7C.9D.10