His parents didn't earn much money so he dropped out of school because of p____(贫穷).
如图所示,圆形玻璃平板半径为r,一质量为m的小木块放置在玻璃板的边缘,随玻璃板一起绕圆心O在水平面内做匀速圆周运动,玻璃板转动的周期为T.求:
国有企业改革的基本方向是( )
-I think winter is a beautiful season , _______ when it snows.
-Me ,too