— “What are you doing?“asked Mom.
— “I am watering flowers,” responded Jack.
A:described
B:shouted
C:answered
如图所示,足够长的传送带以恒定速率逆时针运行,将一物体轻轻放在传送带顶端,第一阶段物体被加速到与传送带具有相同的速度,第二阶段物体与传送带相对静止,匀速运动到达传送带底端.下列说法正确的是( )
Where are my socks? Do you see ____ (they)?
若一个菱形的两条对角线长分别是5cm和10cm,则与该菱形面积相等的正方形的边长是( )