Light----[ travel]300,300 kilometres a second为什么

travel light Travel Light 歌词 I travel alone,so I travel light travel at half the speed of light Light travel faster than sound.=Sound ___ travel so ___ as light. ______ travel more slowly than light.填voice,sound,noise The teacher told us light ___ fast than sound.(travel) 翻译We know that light travel much faster than sound. As we all know,light (travel)faster than sound light ____(travel) 186,000 miles per second The light __(travel)faster than the sound. Light----[ travel]300,300 kilometres a second为什么 lt is fast to travel by light rail.(fast划线提问）( )( )it to travel by light rail Heat may travel the same way as light does.heat may travel the same way as light Light _______ faster than sound.1 travel 2 will travel 3 travels 4 is travelling travel travel travel