light travels at a speed which is about a million times faster than that of sound.

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• 八下 英语 选词填空before,discover,fast,in,come,watch,so,fast,it,ago,shine,not canLight travels at a speed which is about a million times ( ) than that of sound.( ) one second,lidht travels about 300,000 kilomemters,but sound traves only 340 meters.You can get some idea of this gifference by ( ) the start of a running match.If you stand far away from the starter(发令员),you can see smoke ( ) from his gun ( ) the sound reaches your ears.The fastspeed of light prod
• Light travels at a speed which is about a million times faster than the speed of sound.In one second,light travels about
• light travels about a million times faster than sound
• light travels at a speed which is about a million times faster than the speed of sound
• 判断正误Light travels at a speed which is about a million times 急.
• Light travels at a speed which is about a million times faster than the speed of sound.In one second,light travels about 300,000km.But sound travels only 344m.You can get some idea of this difference by watching the start of a race.If you stand some distance away from the starter,you can see smoke comes from his gun before the sound reaches your ears.This great speed of light gives us some strange facts.Sunlight takes about 8 minutes to reach us.If yo
• 选词填空 light travels at a spend which is about a选词填空 light travels at a spend which is about a million times_1than that of sound
• light travels at a speed which is about a million times faster than that of sound.a million times faster是一百万倍的速度吗?举例
• light travels at a speed which is about a million times faster than the speed of sound
• 判断正误Light travels at a speed which is about a million times 急.The Speed of Light　　Light travels at a speed which is about a million times faster than the speed of sound.　　In one second,light travels about 300,000 kilometres.　　But sound travels only 0.344 kilometres .You can get some idea of this difference by watching the start of a race.If you 　　Stand some distance(距离) away from the starter,you can see smoke come from his gun　　(枪) before the sound re
• however by the 2100 the journey might take only a very short time in space
• only a very short time before