如图,在▱ABCD中,O是对角线AC,BD的交点,下列结论错误的是( )
A:AB∥CD
B:AB=CD
C:AC=BD
D:OA=OC
—What can you see?
—I can see a ____.
—Where is it?
—It's ____ the table.
下列句子中没有语病的一句是( )