A . 40
B . 32
C . 30
D . 28
[主观题]2,6,12,20,()A.40;B.32;C.30;D.28
[单选题]0,2,6,12,20,30,( )。A.34B.38C.40D.42
[单选题]0,2,6,12,20,30,( )。A.34B.38C.40D.42
[单选题]0,2,6,12,20,30,( )。A.34B.38C.40D.42
[单选题]0,2,6,12,20,30,( )。A.34B.38C.40D.42
[单选题]0,2,6,12,20,30,( )。A.34B.38C.40D.42
[单选题]0,2,6,12,20,30,( )。A.34B.38C.40D.42
[单选题]0,2,6,12,20,30,( )。A.34B.38C.40D.42
[单选题]0,2,6,12,20,30,( )。A.34B.38C.40D.42
[单选题]0,2,6,12,20,30,( )。A.34B.38C.40D.42