A:①②③
B:①③④
C:②③④
D:①②③④
鲁迅在《琐记》中提到喜欢看的一本书是____,《琐记》一文中,用了“乌烟瘴气”一词来讥讽的对象是____。
一个重为20 N的物体静止在斜面上,试在图中画出物体所受力的示意图。
We believe the public services in our city are good, and we are working hard to make it even .