更多"Because light travels (fast) ______"的相关试题:
[单项选择]Light travels very fast. It moves at a speed of 300,000 kilometers a second. Light reaches us from the moon in less than a second and a half. The moon is about 382,000 kilometers away.
Light from the sun reaches us in 8.5 minutes. The sun is about 149,840,000 kilometers from the earth.
The other stars are farther away than the sun. Light from the nearest star reaches us in about four years. When you look at a star, you do not see its present condition. You see it as it used to be. Light from some stars takes hundreds of years to reach us. We never see a star as it is now. We see it as it was long ago; perhaps hundreds of thousands of years ago.
Astronomers (天文学家) watch the stars through big telescopes. The world’s biggest telescope is in Russia. The next biggest is in-the United States. With these great telescopes astronomers can see stars and other things very far away. Some of these things are not only stars. They are great groups of stars.
The light of the sun reac
A. more time than
B. less time than
C. as much time as
D. less years than
[单项选择]California has more light than it knows ____________ to do with but everything else is expensive.
A. how
B. what
C. which
D. where
[单项选择]My mother is a light sleeper, ______ to any sound even as low as the humming of a mosquito
A. alert
B. acute
C. keen
D. immune
[填空题]Production went up (fast)（）in June than it did in the previous month.
[填空题]Due to the fact that light travels______(fast) than sound, lightning is seen before thunder is heard.
[单项选择]Light is different ______ sound ______ the way it travels.
A. in, from B. of, to C. by, for D. from, in
[填空题]Production went up (fast) ______ in June than it did in the previous month.
[简答题]light industrial products
[填空题]He runs very fast. His brother runs fast too.
He runs ______ his brother does.
[填空题]He runs very fast. His brother runs fast too.
He runs ______ his brother does.
[填空题]The light on the wall turns off.
The light on the wall ______.
[填空题]The light on the wall turns off.
The light on the wall ______.
