information is transmitted at the speed of sound or the speed of light ,depending on your connectio

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• information is transmitted at the speed of sound or the speed of light ,depending on your connectio
• 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
• information is transmitted at the speed of sound or the speed of light ,depending on your connectio
• information is transmitted at the speed of sound or the speed of light
• information is transmitted at the speed of sound or 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 300,000km.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
• 英语翻译Light travels at a speed which is about a million times faster than that of sound .You can get some idea of this difference by watching the start of a running match.If you stand far away from the starter,you can see smoke come from his gun before the sound teaches your ears.The speed of light produces some strange facts.The nearest star is so far away that the light you see from it tonight started to travel to you 4 years ago at a speed of nearly
• 长江在中国和世界河流中的地位
• 990/330=(),如果990和330同时缩小30倍,那么商是()