题目列表(包括答案和解析)
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 come from his gun before the sound reaches your ears. This great speed of light produces some strange facts. Sunlight takes about 8 minutes to reach us. If you look at the light of the moon tonight, remember that the light rays(光线)left the moon 1.3 seconds before they reached you. The nearest star is so far away that the light which you can see from it tonight started to travel towards you four years ago at a speed of nearly 2 million km per minute. In some cases the light from one of tonight’s stars started on its journey to you before you were born.
Thus, if we want to be honest, we cannot say “ The stars are shining tonight.” We have to say, “ The stars look pretty. They were shining four years ago but their light has only just reached Earth.”
Light speed is ________ than sound speed.
A. millions times faster B. a million times slower
C. about millions of times faster D. about a million times faster
If you stand 200 meters away from a man who is firing a gun to start a race, you will find out that _____.
A. you can hear the gun before you see the smoke.
B. sound does not travel as fast as light.
C. the sound of the gun will reach you before the man fires his gun.
D. sound travels about a million times faster than light.
What does “ it” refer to?
A. moon light B. light rays C. the nearest star D. the moon
The scientific way of saying “ The stars are shining tonight” should be________.
A. the stars have been shining all the time.
B. the stars seen tonight will be shining four years later.
C. the stars were shining long ago but are seen tonight.
D. the starlight seen today could be seen four years ago.
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 come from his gun before the sound reaches your ears. This great speed of light produces some strange facts. Sunlight takes about 8 minutes to reach us. If you look at the light of the moon tonight, remember that the light rays(光线)left the moon 1.3 seconds before they reached you. The nearest star is so far away that the light which you can see from it tonight started to travel towards you four years ago at a speed of nearly 2 million km per minute. In some cases the light from one of tonight’s stars started on its journey to you before you were born.
Thus, if we want to be honest, we cannot say “ The stars are shining tonight.” We have to say, “ The stars look pretty. They were shining four years ago but their light has only just reached Earth.”
【小题1】 Light speed is ________ than sound speed.
| A.millions times faster | B.a million times slower |
| C.about millions of times faster | D.about a million times faster |
| A.you can hear the gun before you see the smoke. |
| B.sound does not travel as fast as light. |
| C.the sound of the gun will reach you before the man fires his gun. |
| D.sound travels about a million times faster than light. |
| A.moon light | B.light rays | C.the nearest star | D.the moon |
| A.the stars have been shining all the time. |
| B.the stars seen tonight will be shining four years later. |
| C.the stars were shining long ago but are seen tonight. |
| D.the starlight seen today could be seen four years ago. |
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 come from his gun before the sound reaches your ears. This great speed of light produces some strange facts. Sunlight takes about 8 minutes to reach us. If you look at the light of the moon tonight, remember that the light rays(光线)left the moon 1.3 seconds before they reached you. The nearest star is so far away that the light which you can see from it tonight started to travel towards you four years ago at a speed of nearly 2 million km per minute. In some cases the light from one of tonight’s stars started on its journey to you before you were born.
Thus, if we want to be honest, we cannot say “ The stars are shining tonight.” We have to say, “ The stars look pretty. They were shining four years ago but their light has only just reached Earth.”
1. Light speed is ________ than sound speed.
|
A.millions times faster |
B.a million times slower |
|
C.about millions of times faster |
D.about a million times faster |
2.If you stand 200 meters away from a man who is firing a gun to start a race, you will find out that _____.
|
A.you can hear the gun before you see the smoke. |
|
B.sound does not travel as fast as light. |
|
C.the sound of the gun will reach you before the man fires his gun. |
|
D.sound travels about a million times faster than light. |
3.What does “ it” refer to?
|
A.moon light |
B.light rays |
C.the nearest star |
D.the moon |
4.The scientific way of saying “ The stars are shining tonight” should be________.
|
A.the stars have been shining all the time. |
|
B.the stars seen tonight will be shining four years later. |
|
C.the stars were shining long ago but are seen tonight. |
|
D.the starlight seen today could be seen four years ago. |
When friends come to visit us in the evening, they spend their time telling us they are in a hurry and looking at their watches. It isn’t that our friends are all very busy, it is just that we haven’t got a television. People think that we are very strange. “But what do you do in the evening?”,they are always asking. The answer is very simple. Both my wife and I have hobbies. We certainly don’t spend our evenings staring at the walls. My wife enjoys cooking and painting and often attends evening classes in foreign languages. This is particularly useful as we often go abroad for our holidays. I collect stamps and I’m always busy with my collection. Both of us enjoy listening to the music and playing chess together.
Sometimes there are power cuts and we have no electricity in the house. This does not worry us, we just light candles and carry on with what we were doing before. Our friends, however, are lost---no television!---So they don’t know what to do. On such evenings our house is very full ---they all come to us. They all have a good time. Instead of sitting in silence in front of the television, everybody talks and plays games.
The couple have not got a television, because .
A. they are not rich enough
B. they are strange people
C. they enjoy spending evenings in their own ways
D. they don’t know what to do when there are power cuts
Both of them are interested in .
A. learning languages B. traveling
C. staying home alone D. watching people play games
At night when there is no electricity, the couple .
A. have to stare at the walls B. can do nothing but sit in silence
C. will have many visitors D. have to go out for candles
The best title for this passage is _____.
A. Why Do We Need a Television? B. Candle! But No Electricity!
C. Different Friends, Different Hobbies. D. We Go Without Televisions!
When friends come to visit us in the evening, they spend their time telling us they are in a hurry and looking at their watches. It isn’t that our friends are all very busy, it is just that we haven’t got a television. People think that we are very strange. “But what do you do in the evening?”,they are always asking. The answer is very simple. Both my wife and I have hobbies. We certainly don’t spend our evenings staring at the walls. My wife enjoys cooking and painting and often attends evening classes in foreign languages. This is particularly useful as we often go abroad for our holidays. I collect stamps and I’m always busy with my collection. Both of us enjoy listening to the music and playing chess together.
Sometimes there are power cuts and we have no electricity in the house. This does not worry us, we just light candles and carry on with what we were doing before. Our friends, however, are lost---no television!---So they don’t know what to do. On such evenings our house is very full ---they all come to us. They all have a good time. Instead of sitting in silence in front of the television, everybody talks and plays games.
57. The couple have not got a television, because .
A. they are not rich enough
B. they are strange people
C. they enjoy spending evenings in their own ways
D. they don’t know what to do when there are power cuts
58. Both of them are interested in .
A. learning languages B. traveling
C. staying home alone D. watching people play games
59.At night when there is no electricity, the couple .
A. have to stare at the walls B. can do nothing but sit in silence
C. will have many visitors D. have to go out for candles
60. The best title for this passage is _____.
A. What is the function of television? B. Candle! But No Electricity!
C. Different Friends, Different Hobbies. D. We Go Without Televisions!
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