Mr. Green lets me the tape recorder to our head master.
A:sending
B:to send
C:send
— What kind of animal has a long nose?
— _________. ( )
如图所示,在地面上以速度v0抛出质量为m的物体,抛出后物体落到比地面低h的海平面上.若以地面为零势能面且不计空气阻力,则( )