根据短文内容，用方框中所给单词的适当形式填空，每词限用一次。

    Virtual Reality (虚拟现实) has already become a reality. By wearing a pair of VR goggles (护目镜) which is connected to your computer, you can experience a lot of things without the room. From climbing the mountain in the world to flying like an , the things you can experience with VR are amazing. this technology is still far from perfect, it is believed that VR will be accepted in the near future.