A.28
B.29
C.30
D.31
[单选题]6,9,10,14,17,21,27,( )。A.28B.29C.30D.31
[单选题]6,9,10,14,17,21,27,( )。A.28B.29C.30D.31
[单选题]6,9,10,14,17,21,27,( )。A.28B.29C.30D.31
[单选题]6,9,10,14,17,21,27,( )。A.28B.29C.30D.31
[单选题]6,9,10,14,17,21,27,( )。A.28B.29C.30D.31
[单选题]6,9,10,14,17,21,27,( )。A.28B.29C.30D.31
[单选题]6,9,10,14,17,21,27,( )。A.28B.29C.30D.31
[单选题]6,9,10,14,17,21,27,( )。A.28B.29C.30D.31
[单选题]6,9,10,14,17,21,27,( )。A.28B.29C.30D.31
[单选题]6,9,10,14,17,21,27,( )。A.28B.29C.30D.31