Where is your cat? It's in the . [ ]
A. classroom
B. apple
C. cup
答案：A
在□ABCD中，AC与BD相交于点O，∠AOB=45°，BD=2，将△ABC沿直线AC翻折后，点B落在点B′处，那么DB′的长为（ ）．
— What do you want to do?
— I want to a new chain.[ ]
A. to buy
B. buying
C. buy
