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

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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
• 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选词填空 light travels at a spend which is about a million times_1than that of sound
• Light travels at about____.A.300 000 kilometres a second B.300 000 kilometres every second 选哪项?为什么?每小时5英里怎么表示?
• This house is the one ____ young painter had ever lived in when he was young.A that B which 理由