① Let's go home! ____ A. It's 9 o'clock.
② Where is Amy? ____ B. Yes.I do.
③ What time is it now? ____ C. OK.
④ Do you like music class? ____ D. She is in the art room.
女孩小彩旗在2014年春晚上进行了4小时的自转表演而不倒,这说明她具有发达的( )
把多项式3x -6xy+3xy 分解因式结果正确的是( )