如图,在平面直角坐标系xOy中,过点A(﹣2,0)的直线交y轴正半轴于点B,将直线AB绕着点O顺时针旋转90°后,分别与x轴、y轴交于点D、C,连接BD,若△ABD的面积是12,点B的运动路径长为 . 答案: 听音,判断正(√)误(×)。 ( ) 1. I'm turning it down. ( ) 2. Kim is playing the violin. ( ) 3. Let's make a snowman.( ) 4. I like to walk in the rain.( ) 5. I like spring.