AWhen you look at the sky at night，the moon looks bigger than the stars． In fact，the moon is much smaller than the stars．It is much smaller than the earth． But the moon is much closer to us than any star． That is why it looks so big． If you hold a coin cl

题目

A

When you look at the sky at night，the moon looks bigger than the stars． In fact，the moon is much smaller than the stars．It is much smaller than the earth． But the moon is much closer to us than any star． That is why it looks so big． If you hold a coin close．to your eye，it looks big．If you look at it across the room，it looks small．The moon moves around the earth． It makes one trip in about four weeks． The moon looks flat(扁的)to us． But it is a round ball，like the earth．People once thought the moon had fire(火) on it． They thought the fire made it bright．Now we know the moon is like a mirror( 镜子 )． It gets its light from the sun Our sunlight comes from the sun，too: What is the sun? The sun is star． The stars we can see have their own light． There are many big stars we can-t see． Their light has burned out． Others are still bright，but they are so far away that we can-t see them． The sun looks bigger and much brighter than other stars because it is the nearest of all stars． The sun and the other stars we see are very hot，but the air around us saves us from(使------免于) the heat(热量) of the sun．The sun gives us light and warmth．It makes plants grow and leaves turn green． It makes life possible on our earth．It is a life-giving star．

( )21． The moon looks bigger because__________ ．

A． some stars are smaller than it

B．it is between the sun and the earth

C．it is the closest to the earth

D．it is very bright

相似考题

1.The pictures of the moon taken from the spacecraft are _______ than those taken from theearth.A. clearB. much clearerC. more clearerD. the clearest

2.My uncle’s house in the downtown area is much smaller than ours, but it is twice _______ expensive.A. as B. so C. too D. very

3.If the neutron star is very large(much bigger than our sun)the process of shrinking may be so intense that a black hole______(result).

4.She is() younger than she looks.A. moreB. veryC. soD. much

参考答案和解析
正确答案：C
．21.C 【解析】由第一段中。But the moon is much closer to us than any star.打可知。
更多“AWhen you look at the sky at night，the moon looks bigger than the stars． In fact，the moon is much smaller than the stars．It is much smaller than the earth． But the moon is much closer to us than any star． That is why it looks so big． If you hold a coin cl”相关问题

  • 第1题：

    Which of the following is true about the motion of the moon?

    [A] The moon and the sun are moving in the same plane.

    [B] The moon revolved along the ecliptic.

    [C] The moon moves faster than the sun.

    [D] The position of the moon can be found changed in an hour's time.


    正确答案：D
    根据第三段的第二句和第三句话，文中说月亮的位置变化相对而言比较快，尽管看起来每天起起落落，事实上它的运动间歇为一个小时。由此可以肯定D为正确答案。

  • 第2题：

    I did much () (good) than you in the final exam.


    参考答案：better

  • 第3题：

    Mr Green is ___ looks.

    A.not so old as he

    B.not as old as I

    C.more old than he

    D.much old than he


    正确答案：A

  • 第4题：

    My uncle s house in the city is much smaller than ours, but it is twice() expensive.

    A、very

    B、so

    C、as

    D、too


    参考答案：C

  • 第5题：

    Have you ever seen the man in the moon?If you look (11)______ at the moon on some nights. you can see the face of the man in the moon. Some people say that they can see an old man (12) ______ sticks. Others say a girl reading. These pictures are made by the mountains and plains of the moon.

    Long ago people in England used to tell their children that the moon was (13)______ green cheese. Everyone knows that this is not true. The moon is a large round rock. It is completely (14)______ . There are no trees and plants of any kind on the moon. There are no rivers and seas. There are no living things. It never rains on the moon，and everything is covered with (15)______ . white dust. Not even a (16)______ can be heard on the moon.

    Where the sun (17)______ on it，the moon is very hot. In the dark，however, it is cold (18) ______ ice. The moon is much smaller than the earth. It does not weigh as (19)______ as the earth. If you (20)______ to the moon，you would weigh six times less than you do. Even a fat man would be able to jump high off the ground.

    (11)

    A．closely

    B．scarcely

    C．daily

    D．immediately


    正确答案：A
    解析：本题考查副词词义的辨析。根据文章，此处应该是“很近地”的意思。scarcely仅仅，几乎不；daily 每日的；immediately立即地。因此A项是正确选项。

  • 第6题：

    共用题干
    Weight on and off the Earth We are so used to.our life on the surface of the earth that it can be quite an effort for our mind to break free of all the ideas that we take for granted.Because we can feel that things are heavy,we think of "weight"as being a fixed quality in an object,but it is not really fixed at all.If you could take a one-pound packet of butter 4,000 miles out from the earth,it would weigh only a quarter of a pound. Why would things weigh only a quarter as much as they do at the surface of the earth if we took them 4,000 miles out into space?The reason is this:all objects have a natural attraction for all other objects;this is called gravitational attraction.But this power of attraction between two obects gets weaker as they get farther apart.When the butter was at the surface of the earth,it was 4,000 miles from the center.When we took the butter 4,000 miles out,it was 8,000 miles from the center,which is twice the distance.If you double the distance between two objects,their gravitational attraction decreases two times two.If you treble the distance, it gets nine times weaker(three times three)and so on. So this is one of the first things we need to remember that the weight of an object in space is not the same as its weight on the surface of the earth. What about the weight of our pound of butter on the surface of the moon?At the distance the puii of the earth is about 4,000 times smaller than it is here on the surface,so we can forget all about the earth-pull on our butter. On the other hand,on the moon there will be an attraction between the butter and the moon,but the butter will weigh only about one-sixth as much as it does on the earth.This is because the moon is so much smaller than the earth.The amount of gravitational pull that a body produces depends on the amount of material in it.A packet of butter has a gravitational pull of its own;but this is very small in relation to the pull of something as large as the moon,or the earth,or the sun.

    According to the passage,"weight"should be understood in the sense that
    A:it is fixed if it is outside the earth's gravitational puli
    B:it decreases four times when it is 4,000 miles from the earth's center
    C:it varies with the change of the gravitational attraction between two objects
    D:things increase in amount as they are closer to the earth's surface

    答案：C
    解析：
    第一段最后一句表明，1磅重的黄油在离地球表面4000英里处重达0.25磅，第二段第一句也表明在4000英里高空处的物体重量仅为其在地球表面的重量的1/4。由此可推算出，4磅重的茶叶在离地球表面4000英里处重达1磅。
    第一段第一句表明，我们之所以不能打破固有思维，是因为我们已经习惯了地球上的生活，也就是说，我们正是因为太过熟悉地球上的事物，才没有去质疑这些固有思维。
    第一段第二句表明，物体的重量并非固定不变。第二段解释说，物体的重量源于物体间的引力。也就是说，物体的重量随着物体间引力的改变而改变。
    最后一段第三句说明一个物体产生的引力与物体本身的重量有关。最后一段第四句又表明由于本身重量较小，一包黄油产生的引力很有限，相对于月球、地球、太阳等产生的强劲引力来说，比较容易被我们忽略。
    本篇文章通篇讲的是重量是由引力产生的，并进一步阐述了物体间引力的变化、物体本身的重量，以及物体间的距离这三者之间的关系，主要讲的还是引力对重量的作用。

  • 第7题：

    共用题干
    Weight on and off the Earth We are so used to.our life on the surface of the earth that it can be quite an effort for our mind to break free of all the ideas that we take for granted.Because we can feel that things are heavy,we think of "weight"as being a fixed quality in an object,but it is not really fixed at all.If you could take a one-pound packet of butter 4,000 miles out from the earth,it would weigh only a quarter of a pound. Why would things weigh only a quarter as much as they do at the surface of the earth if we took them 4,000 miles out into space?The reason is this:all objects have a natural attraction for all other objects;this is called gravitational attraction.But this power of attraction between two obects gets weaker as they get farther apart.When the butter was at the surface of the earth,it was 4,000 miles from the center.When we took the butter 4,000 miles out,it was 8,000 miles from the center,which is twice the distance.If you double the distance between two objects,their gravitational attraction decreases two times two.If you treble the distance, it gets nine times weaker(three times three)and so on. So this is one of the first things we need to remember that the weight of an object in space is not the same as its weight on the surface of the earth. What about the weight of our pound of butter on the surface of the moon?At the distance the puii of the earth is about 4,000 times smaller than it is here on the surface,so we can forget all about the earth-pull on our butter. On the other hand,on the moon there will be an attraction between the butter and the moon,but the butter will weigh only about one-sixth as much as it does on the earth.This is because the moon is so much smaller than the earth.The amount of gravitational pull that a body produces depends on the amount of material in it.A packet of butter has a gravitational pull of its own;but this is very small in relation to the pull of something as large as the moon,or the earth,or the sun.

    We do not feel the gravitational pull of a packet of butter because
    A:it is too small to have a gravitational pull of its own
    B:its puil is so small that we tend to ignore it
    C:its pui1 disappears in the presence of the earth's gravitation
    D:it tends to melt and loses its gravitational puli

    答案：B
    解析：
    第一段最后一句表明，1磅重的黄油在离地球表面4000英里处重达0.25磅，第二段第一句也表明在4000英里高空处的物体重量仅为其在地球表面的重量的1/4。由此可推算出，4磅重的茶叶在离地球表面4000英里处重达1磅。
    第一段第一句表明，我们之所以不能打破固有思维，是因为我们已经习惯了地球上的生活，也就是说，我们正是因为太过熟悉地球上的事物，才没有去质疑这些固有思维。
    第一段第二句表明，物体的重量并非固定不变。第二段解释说，物体的重量源于物体间的引力。也就是说，物体的重量随着物体间引力的改变而改变。
    最后一段第三句说明一个物体产生的引力与物体本身的重量有关。最后一段第四句又表明由于本身重量较小，一包黄油产生的引力很有限，相对于月球、地球、太阳等产生的强劲引力来说，比较容易被我们忽略。
    本篇文章通篇讲的是重量是由引力产生的，并进一步阐述了物体间引力的变化、物体本身的重量，以及物体间的距离这三者之间的关系，主要讲的还是引力对重量的作用。

  • 第8题：

    共用题干
    Weight on and off the Earth We are so used to.our life on the surface of the earth that it can be quite an effort for our mind to break free of all the ideas that we take for granted.Because we can feel that things are heavy,we think of "weight"as being a fixed quality in an object,but it is not really fixed at all.If you could take a one-pound packet of butter 4,000 miles out from the earth,it would weigh only a quarter of a pound. Why would things weigh only a quarter as much as they do at the surface of the earth if we took them 4,000 miles out into space?The reason is this:all objects have a natural attraction for all other objects;this is called gravitational attraction.But this power of attraction between two obects gets weaker as they get farther apart.When the butter was at the surface of the earth,it was 4,000 miles from the center.When we took the butter 4,000 miles out,it was 8,000 miles from the center,which is twice the distance.If you double the distance between two objects,their gravitational attraction decreases two times two.If you treble the distance, it gets nine times weaker(three times three)and so on. So this is one of the first things we need to remember that the weight of an object in space is not the same as its weight on the surface of the earth. What about the weight of our pound of butter on the surface of the moon?At the distance the puii of the earth is about 4,000 times smaller than it is here on the surface,so we can forget all about the earth-pull on our butter. On the other hand,on the moon there will be an attraction between the butter and the moon,but the butter will weigh only about one-sixth as much as it does on the earth.This is because the moon is so much smaller than the earth.The amount of gravitational pull that a body produces depends on the amount of material in it.A packet of butter has a gravitational pull of its own;but this is very small in relation to the pull of something as large as the moon,or the earth,or the sun.

    The main idea of this passage is
    A:different weight systems in different places
    B:freedom from traditional ideas
    C:traveling from the earth to the moon
    D:the effect of gravitation on weight

    答案：D
    解析：
    第一段最后一句表明，1磅重的黄油在离地球表面4000英里处重达0.25磅，第二段第一句也表明在4000英里高空处的物体重量仅为其在地球表面的重量的1/4。由此可推算出，4磅重的茶叶在离地球表面4000英里处重达1磅。
    第一段第一句表明，我们之所以不能打破固有思维，是因为我们已经习惯了地球上的生活，也就是说，我们正是因为太过熟悉地球上的事物，才没有去质疑这些固有思维。
    第一段第二句表明，物体的重量并非固定不变。第二段解释说，物体的重量源于物体间的引力。也就是说，物体的重量随着物体间引力的改变而改变。
    最后一段第三句说明一个物体产生的引力与物体本身的重量有关。最后一段第四句又表明由于本身重量较小，一包黄油产生的引力很有限，相对于月球、地球、太阳等产生的强劲引力来说，比较容易被我们忽略。
    本篇文章通篇讲的是重量是由引力产生的，并进一步阐述了物体间引力的变化、物体本身的重量，以及物体间的距离这三者之间的关系，主要讲的还是引力对重量的作用。

  • 第9题：

    How much did you（）all these things? More than forty dollars.

    Aspend

    Bcost 

    Cgive 

    Dpay for


    D
    略

  • 第10题：

    单选题
    Other than the Sun and Moon，the brightest object in the sky is（）.
    A

    Sirius

    B

    Canopus

    C

    Venus

    D

    Jupiter


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    Our car is a much older _____ than yours and so we paid less than you.
    A

    model

    B

    manufacture

    C

    form

    D

    pattern


    正确答案： A
    解析：
    model模型，测试型产品。manufacture产品，制造。form形状，外貌。pattern模子。

  • 第12题：

    单选题
    They had the appearance of dark-skinned and dark-haired humans, _____ of course they were much smaller than ordinary people.
    A

    however

    B

    although

    C

    while

    D

    nevertheless


    正确答案： D
    解析：
    句意：他们有人类的外表—黝黑的皮肤，黑亮的头发，尽管比普通人小得多。although引导让步状语从句。

  • 第13题：

    Compared to the Earth, the moon is much smaller.()

    此题为判断题(对，错)。


    参考答案：正确

  • 第14题：

    there is no reason that they should limit how much vitamin you take ____ they can limit how much water you drink.

    A. any more than

    B. no more than

    C. much more than

    D. no less than


    参考答案：A

  • 第15题：

    _____ a spoonful of soil can tell us so much about the structure and early history of the moon.

    A、Remarkable

    B、Quite remarkably

    C、It is remarkable that

    D、It is remarkable fact that


    参考答案：C

  • 第16题：

    Believe it or not，the day when you can go to the moon is coming soon．You can go into space (11) space shuttle．It (12) about three days for the shuttle to go from the earth to the moon． The shuttle flies a long way to a space station． You can stay there for a short rest and then it will (13) you to the moon．

    Now you can jump out of the shuttle． But you mustn't take (14) your spacesuit，because it is very hot in the daytime and very cold at night on the moon． The moon is much smaller than the earth． Things are (15) 0n the moon than they are on the earth． You can jump high every time you take a step． You will find that it is never tiring to walk on the moon． You don't need to take an umbrella or a raincoat with you，(16) there is no rain on the moon You can hear (17) because there is no air on the moon． And there are no animals or(18) living things there．

    The moon moves more slowly than the earth，so one day on the moon is as long as two weeks on the earth and one night is just as long as two weeks on the earth． What could you do in (19 )long days and nights and in a silent world?' Now scientists are trying to make the (20) 0f the moon． But our earth is really a far better place to live，as long as we take good care of it，

    ( )11．

    A．on

    B．in

    C．by

    D．with


    正确答案：C
    11.C【解析】构成"by+交通工具”结构，by space shuttle意为“乘航天飞机”。

  • 第17题：

    --I wonder why Mary is so unfriendly to us.
    --She is ______ than unfriendly, I'm afraid.

    A. shyer
    B. much shyer
    C. shy more
    D. more shy

    答案：D
    解析：
    句意为"与其说她不友好不如说她害羞"。more…than…意为"与其说……不如说……"。

  • 第18题：

    共用题干
    Weight on and off the Earth We are so used to.our life on the surface of the earth that it can be quite an effort for our mind to break free of all the ideas that we take for granted.Because we can feel that things are heavy,we think of "weight"as being a fixed quality in an object,but it is not really fixed at all.If you could take a one-pound packet of butter 4,000 miles out from the earth,it would weigh only a quarter of a pound. Why would things weigh only a quarter as much as they do at the surface of the earth if we took them 4,000 miles out into space?The reason is this:all objects have a natural attraction for all other objects;this is called gravitational attraction.But this power of attraction between two obects gets weaker as they get farther apart.When the butter was at the surface of the earth,it was 4,000 miles from the center.When we took the butter 4,000 miles out,it was 8,000 miles from the center,which is twice the distance.If you double the distance between two objects,their gravitational attraction decreases two times two.If you treble the distance, it gets nine times weaker(three times three)and so on. So this is one of the first things we need to remember that the weight of an object in space is not the same as its weight on the surface of the earth. What about the weight of our pound of butter on the surface of the moon?At the distance the puii of the earth is about 4,000 times smaller than it is here on the surface,so we can forget all about the earth-pull on our butter. On the other hand,on the moon there will be an attraction between the butter and the moon,but the butter will weigh only about one-sixth as much as it does on the earth.This is because the moon is so much smaller than the earth.The amount of gravitational pull that a body produces depends on the amount of material in it.A packet of butter has a gravitational pull of its own;but this is very small in relation to the pull of something as large as the moon,or the earth,or the sun.

    How much would four pounds of tea weigh if it was taken 4,000 miles out from the surface of the earth?
    A:1 pound.
    B:2 pounds.
    C:3 pounds.
    D:4 pounds.

    答案：A
    解析：
    第一段最后一句表明，1磅重的黄油在离地球表面4000英里处重达0.25磅，第二段第一句也表明在4000英里高空处的物体重量仅为其在地球表面的重量的1/4。由此可推算出，4磅重的茶叶在离地球表面4000英里处重达1磅。
    第一段第一句表明，我们之所以不能打破固有思维，是因为我们已经习惯了地球上的生活，也就是说，我们正是因为太过熟悉地球上的事物，才没有去质疑这些固有思维。
    第一段第二句表明，物体的重量并非固定不变。第二段解释说，物体的重量源于物体间的引力。也就是说，物体的重量随着物体间引力的改变而改变。
    最后一段第三句说明一个物体产生的引力与物体本身的重量有关。最后一段第四句又表明由于本身重量较小，一包黄油产生的引力很有限，相对于月球、地球、太阳等产生的强劲引力来说，比较容易被我们忽略。
    本篇文章通篇讲的是重量是由引力产生的，并进一步阐述了物体间引力的变化、物体本身的重量，以及物体间的距离这三者之间的关系，主要讲的还是引力对重量的作用。

  • 第19题：

    共用题干
    Weight on and off the Earth We are so used to.our life on the surface of the earth that it can be quite an effort for our mind to break free of all the ideas that we take for granted.Because we can feel that things are heavy,we think of "weight"as being a fixed quality in an object,but it is not really fixed at all.If you could take a one-pound packet of butter 4,000 miles out from the earth,it would weigh only a quarter of a pound. Why would things weigh only a quarter as much as they do at the surface of the earth if we took them 4,000 miles out into space?The reason is this:all objects have a natural attraction for all other objects;this is called gravitational attraction.But this power of attraction between two obects gets weaker as they get farther apart.When the butter was at the surface of the earth,it was 4,000 miles from the center.When we took the butter 4,000 miles out,it was 8,000 miles from the center,which is twice the distance.If you double the distance between two objects,their gravitational attraction decreases two times two.If you treble the distance, it gets nine times weaker(three times three)and so on. So this is one of the first things we need to remember that the weight of an object in space is not the same as its weight on the surface of the earth. What about the weight of our pound of butter on the surface of the moon?At the distance the puii of the earth is about 4,000 times smaller than it is here on the surface,so we can forget all about the earth-pull on our butter. On the other hand,on the moon there will be an attraction between the butter and the moon,but the butter will weigh only about one-sixth as much as it does on the earth.This is because the moon is so much smaller than the earth.The amount of gravitational pull that a body produces depends on the amount of material in it.A packet of butter has a gravitational pull of its own;but this is very small in relation to the pull of something as large as the moon,or the earth,or the sun.

    We find it hard to break free from ideas connected with living on the earth because______.
    A:it demands too great an effort for us to do so
    B:we are too familiar with the way things are to question the ideas
    C:we have proved that those ideas are correct
    D:we are so sure of ourselves that we never doubt anything on the earth

    答案：B
    解析：
    第一段最后一句表明，1磅重的黄油在离地球表面4000英里处重达0.25磅，第二段第一句也表明在4000英里高空处的物体重量仅为其在地球表面的重量的1/4。由此可推算出，4磅重的茶叶在离地球表面4000英里处重达1磅。
    第一段第一句表明，我们之所以不能打破固有思维，是因为我们已经习惯了地球上的生活，也就是说，我们正是因为太过熟悉地球上的事物，才没有去质疑这些固有思维。
    第一段第二句表明，物体的重量并非固定不变。第二段解释说，物体的重量源于物体间的引力。也就是说，物体的重量随着物体间引力的改变而改变。
    最后一段第三句说明一个物体产生的引力与物体本身的重量有关。最后一段第四句又表明由于本身重量较小，一包黄油产生的引力很有限，相对于月球、地球、太阳等产生的强劲引力来说，比较容易被我们忽略。
    本篇文章通篇讲的是重量是由引力产生的，并进一步阐述了物体间引力的变化、物体本身的重量，以及物体间的距离这三者之间的关系，主要讲的还是引力对重量的作用。

  • 第20题：

    There is no reason they should limit how much vitamin you take，( )they can limit how much water you drink.

    A.much more than
    B.no more than
    C.no less than
    D.any more than

    答案：D
    解析：
    考查比较结构。A项意为“比...多得多”；B项意为“和……一样不，仅仅”；C项意为“多达”；D项no...more than意为“两者都不”，其强调形式为not...any more than。由于前一句已有否定词no，因此D项正确。故本题选D。句意：正如他们无权限制人们喝多少水一样，他们也没有理由限制人们摄入多少维生素。

  • 第21题：

    单选题
    Generally speaking, men play ball games much better than women because ______.
    A

    men play ball games more often than women

    B

    men love ball games more than women do

    C

    men’s hand and eye movements are quicker in response

    D

    men have a smaller number of nerves in their brains than women


    正确答案： B
    解析：
    录音中提到“Boys also are generally faster in response than girls of hand and eye movements in ball games”，意思是：通常情况下，男孩子在球类运动中手眼运动反应比女孩子快，所以选项C的表述符合原文意思。

  • 第22题：

    单选题
    They had the appearance of dark-skinned and dark-haired humans, _______ of course they were much smaller than ordinary people.
    A

    however

    B

    although    

    C

    while  

    D

    nevertheless


    正确答案： B
    解析：
    他们有人类的外表—黝黑的皮肤，黑亮的头发，尽管比普通人小得多。although引导让步状语从句。

  • 第23题：

    单选题
    What does the underlined word “outnumber” mean?
    A

    To be smaller in size than another group.

    B

    To be more in number than another group.

    C

    To be bigger in area than another group.

    D

    To be smaller in area than another group.


    正确答案： D
    解析：
    词义猜测题。根据上下文语境可知，此处“outnumber”表示“数目超过，多于”。

相关内容