1÷0.5=____÷0.5=____÷0.5=____
写出下列词语的反义词: small-____
He __________ goes to Tai’an, so he wants to go there.
物体甲的x﹣t图象和物体乙的v﹣t图象分别如图所示,则这两个物体的运动情况是( )