Light travels at a speed which is about a million times1_ (fast) than the speed of sound. _ 2_ one second,light travels about 300,000 km. But sound travels only 344m. You can get some ideas of this difference by_ 3(watch)the start of a race. If you stand far 4 from the ...
Light travels at a speed (速度) which is about a million times faster than that of sound. In one second, light travels about 300,000 kilometers, but sound travels only 340 meters. You can get some idea of this difference by watching the start of a running match. If you stand quite ...
小题2:根据第一句Light travels at a speed(速度) which is about a million times faster than that of sound .光的传播速度是声音的100万倍,故此处说声音的速度是340米符合文意;故答案为metres。 小题3:通过观看赛跑运动开始的过程可以对这种差异有一个大概的概念,因为后面提到通过观看发令员强中冒出的烟来...
【小题2】根据第一句Light travels at a speed(速度) which is about a million times faster than that of sound .光的传播速度是声音的100万倍,故此处说声音的速度是340米符合文意;故答案为metres。 【小题3】通过观看赛跑运动开始的过程可以对这种差异有一个大概的概念,因为后面提到通过观看发令员强中冒出...
阅读理解 Light travels at a speed which is about a million times faster than that of sound. In one second light travels about 300 000 kilometers but sound travels only 344 metros. You can get some idea of this differenc
Light travels at a speed which is about a million times faster than the speed of sound. You can get some ide a of this difference by watching the start of a race. If you stand some distance away from the starter, you can see smoke from his gun before the sound reaches your ears....
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 344 m.You can get some idea of this difference by watching the start of a race.If you stand some distance away from the Starter,yo...
1.先通读下面的短文.掌握其大意.然后根据短文内容和所给首字母.在空格内填入一个适当的词.使短文意思完整.Light travels at a speed which is about a million times (46)faster than that of sound.In one (47)second.light travels about 300.000kilometers.but sound
Light travels at a speed which is about a million times faster than the speed of sound. 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 from his gun before the sound reaches your ears. This...
(1)考查细节理解。根据第一段中的“Light travels at a speed which is about a million times faster than the speed of sound.”可知光的传播速度比声音的传播速度要快一百万倍,故选D。 (2) 考查细节理解。根据第一段中的“If you stand some distance away from the starter, you can see smoke from...