A:to
B:for
C:with
-18℃____
下列各句直接说明凌虚台命名原因的一项是( )
如图所示物体AB通过凸透镜所成正立、放大的像A′B′,请画出凸透镜的位置,并确定该透镜焦点F.
如果∠1与∠2互补,∠2与∠3互余,则∠1与∠3的关系是( )
—Are you going to the important party?
—Yes. And anybody who will attend it should formally.