网址：http://m.1010jiajiao.com/timu3_id_2409113[举报]
The sun is really a star. It’s much bigger than the earth and it is very hot. Some people have been to the moon, but we know no one can go to the sun. It’s too hot for people to live anywhere near it. The sun is three hundred thousand times heavier than the earth and more than a million times larger.
1.Long ago people thought_____.
A. the sun circled the earth
B.the earth circled the sun
C.the earth went round the sun
D.the moon went round the sun
2.It takes_____.
A. the sun one year to go all the way round the earth
B.the earth one year to go all the way round the sun
C.the earth one month to go round the sun
D.the sun one month to go round the earth
3.In fact the earth travels _____in the space.
A. a million kilometers an hour
B.half a thousand kilometers a minute
C.very fast
D.very slowly
4.People can never live anywhere near the sun because_____.
A. the sun is too hot
B.the sun is too far
C.the sun is too big
D.spaceships can’t reach the sun
5.The earth is_____.
A. as heavy as the sun
B.much heavier than the sun
C.as light as the sun
D.much lighter than the sun
查看习题详情和答案>>
The sun is really a star. It's much bigger than the earth and it is very hot. Some people have been to the moon，but we know no one can go to the sun. It’s too hot for people to live any where near it. The sun is three hundred thousand times heavier than the earth and more than amillion times larger.
l. Long ago people thought________ ( )
A. the sun circled the earth
B. the earth circled the sun
C. the earth Went round the sun
D. the moon Went round the sun
2. It takes _________ ( )
A. the sun one year to go all the way round the earth
B. the earth one year to go all the way round the sun
C. the earth one month to go round the sun
D. the sun one month to go round the earth
3. In fact the earth travels __________ in the space.( )
A. a million kilometers an hour
B. half a thousand kilometers a minute
C. Very fast
D. very slowly
4. People can never live anywhere near the sun because________ ( )
A. the sun is too hot
B. the sun is too far
C. the sun is too big
D. spaceships can’t reach the sun
5. The earth is___________.( )
A. as heavy as the Sun
B. much heavier than the Sun
C. as light as the sun
D. much lighter than the sun
查看习题详情和答案>>
[ ]
B. The earth.
C. The moon.
D. A satellite.
阅读理解
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 far away from the starter (发令员), you can see smoke come from his gun before the sound reaches your ears.
The fast 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 (射线) left the moon 1. 3 seconds before they reached you. The nearest star is so far away that light which you can see from it tonight started to travel to you 4 years ago at a speed of nearly 2 million kilometers every minute. The light from some of tonight's started on its journey towards you even before you were born.
So, if we want to be honest (诚实的), we can not say, “The stars are shining brightly tonight.” We have to say. “The stars look nice. They were shining four years ago but their light has just reached our earth.”
1．The best title of this passage is ________.
[ ]
A．Light Travels Faster Than Sound
B．Stars Are Far Away From Us
C．The Speed of Light
D．How Light Rays Travel
2．If you stand 200 meters away from a man who is lifting a gun to
start a running match, you will find out ________.
[ ]
A．light travels a million times faster than sound
B．the smoke of the gun gets into your sight after the sound of the gun-shot
C．sound travels less fast than light
D．the sound of the gun reached you at the same time with the light of the smoke
3．Sunlight obviously (明显的) ________ than the light of the moon.
[ ]
A．has to travel a greater distance (距离)
B．moves less quickly
C．travels much more quickly
D．is less powerful
4．The scientific way of saying ``The stars are shining brightly 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 which were shining long ago but are seen tonight
D．the starlight seen tonight could be seen four years ago
5．The light of the nearest star you see tonight has been ________ for years.
[ ]
| 完形填空。 | ||||
| A long time 1 people thought the sun went round the earth. In some countries people even said that the sun was a god (神). They thought that he drove across the sky every day 2 a golden horse. Now they know the earth goes round the sun. It 3 the earth a year to go all the way round the sun. Today men even know 4 it is for the earth to go round the sun. They 5 us that the earth travels over a thousand miles a minute on its way round the sun. The sun is really a star. It's 6 bigger than the earth and it is very hot. Some people have been to the moon. 7 no one can 8 to the sun. It's 9 hot for people to live anywhere near it. The sun is three hundred 10 times heavier than the earth and more than a million times larger. | ||||
|