One day when Isaac Newton was reading a book under an apple tree on the farm, an apple fell down and hit him on the head. For most people that would be the end of the story, but not for Newton. Why did the apple fall out of the tree? Does everything fall? What makes things fall? Can anything stop things from falling? Are the sun, moon, and stars falling? Why don’t they ever hit the ground?

So many questions. Newton spent many years answering these questions by thinking and doing experiments. He made up the law of gravity. According to this law everything pulls everything else to itself by a force called gravity. How strong that force is depends on how heavy the things are and how close together.

Newton’s law of gravity not only explained how things fall on earth, but now planets move around the sun and how moons move around planets. A friend of his, Edmund Halley, decided to try Newton’s theory on comets. People had been studying comets for hundreds of years without figuring them out, so he decided to study their reports and compare them to Newton’s theory.

Up till then people had thought that comets just came and went, and that nobody could know when or why. But Newton’s law of gravity gave rules that Halley could use to study the records of comets. He found some reports of a big bright comet that he was sure was the same one, coming back every 75 years. He predicted when it would come back next.

If anybody still didn’t believe Newton, then the appearance of Halley’s Comet just when Halley had predicted it using Newton’s ideas was enough to convince them. Halley’s Comet has come a few times since then, always right on schedule. You’ll be able to see it on its next trip near the sun and earth when you’re old enough to be a grandparent.

71.The passage starts with a story _____________.

A.because it was such a funny one

B.because Newton liked to eat apples

C.to show how much Newton liked reading

D/to show what started Newton’s discovering gravity

72.According to the author, Newton was especially different from others in that ____________.

A.he liked reading under apple trees

B.he liked to find out how things worked

C.he was very quiet and patient

D.he was so much interested in science

73.Newton’s law of gravity can tell us that _____________.

A.gravity has no relationship with the weight of things.\

B.how things fall on earth

C.it is not of help to the study of comets

D.it can explain everything in the world

74.The underlined word “ convince” in the last paragraph probably means “______________”

A. make… believe                B. make… doubt

C. make… understand             D. make… interested

75. Which of the following is TRUE about Edmund Halley?

A. He discovered a big bright comet.

B. He helped Newton to create his theory.

C. He predicted when the same comet would come back.

D. He studied the same comet for 75 years.

 

【答案】

71---75   DBBAC  

【解析】略

 

練習(xí)冊系列答案
相關(guān)習(xí)題

科目:高中英語 來源: 題型:閱讀理解

    One day,Raul was miles away from the small ranch(牧場) house in a large valley. 36  seemed to be all right, yet he felt strange and somewhat uneasy.The wind had picked up, and angry, dark clouds  37  across the sky. He could smell the rain coming. And it did. 38  ,the lightning flashed through the clouds, nearly  39  Raul. The thunder(雷聲) was so loud that he buried his  40   in his hands and rubbed his eyes. Then he heard it. Hoofbeats(蹄聲).He  41 .There before him stood a tall, white  42 . An old man stared down at him from its back.

    “Wh-wh-who are y-y-you?” asked Raul. “My name is Gray Cloud,” the old man answered  43 . “Come with me.”

    Raul followed on his horse. A  44 feeling came over him. All  45  them the rain was pouring down,  46  not a drop fell on them. They seemed to be  47   back toward Raul’s home. Raul lost track of time. Then all at once he found  48  at the ranch gate. The old man turned his horse,  49  his hand, and smiled. Lightning flashed again. The old man and his horse were  50 .

    Raul’s father ran out across the yard  to   51  him. “we have been  52  sick about you. Are you okay? Hurry. Let’s get in out of the  53  .”

    “Wait,” said Raul. “Have you ever heard of an old man called Gray Cloud?”

    “Can’t say I … wait. I  54  my great-grandfather used to tell storied about a man called Gray Cloud. He died a long time ago. They say he was  55  by lightning during a terrible thunderstorm. Why do you ask?”

36. A.Something  B.Everything               C.Anything                  D.Nothing

37.A.dropped        B.fell                   C.rolled                       D.covered

38.A.Suddenly      B.Strongly            C.Quickly             D.Hardly

39.A.beating                B.blinding            C.burning             D.touching

40.A.nose             B.hair                   C.neck                  D.head

41.A.looked up     B.woke up            C.lay down           D.sat down

42.A.tiger             B.horse                C.lion                   D.elephant

43.A.lazily            B.angrily              C.coldly                      D.slowly

44.A.natural         B.common            C.strange              D.bad

45.A.around         B.beside               C.through             D.above

46.A.yet               B.for                    C.so                     D.or

47.A.walking               B.leading              C.heading             D.returning

48.A.them            B.themselves         C.him                   D.himself

49.A.shook           B.waved               C.held                  D.took

50.A.gone             B.left                   C.followed            D.lost

51.A.see               B.meet                C.beat                  D.ask

52.A.waited         B.thought             C.worried             D.excited

53.A.yard             B.wind                C.grass                D.rain

54.A.believe                B.consider            C.doubt                       D.forget

55.A.defeated        B.caught               C.damaged            D.struck

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

One day, Raul was miles away from the small ranch(牧場) house in a large valley.   36

seemed to be all right, yet he felt strange and somewhat uneasy. The wind had picked up, and angry, dark clouds   37  across the sky. He could smell the rain coming. And it did.  38  ,the lightning flashed through the clouds, nearly   39    Raul. The thunder(雷聲) was so loud that he buried his  40   in his hands and rubbed his eyes. Then he heard it. Hoof beats(蹄聲).He   41  .There before him stood a tall, white   42  . An old man stared down at him from its back.

      “Wh-wh-who are y-y-you?” asked Raul. “My name is Gray Cloud,” the old man answered   43  .“Come with me.”

      Raul followed on his horse. A   44   feeling came over him. All    45    them the rain was pouring down,  46    not a drop fell on them. They seemed to be  47   back toward Raul’s home. Raul lost track of time. Then all at once he found  48  at the ranch gate. The old man turned his horse,  49  his hand, and smiled. Lightning flashed again. The old man and his horse were  50 .

Raul’s father ran out across the yard  to   51  him. “we have been  52  sick about you. Are you okay? Hurry. Let’s get in out of the  53  .”

   “Wait,” said Raul. “Have you ever heard of an old man called Gray Cloud?”

   “Can’t say I … wait. I  54  my great-grandfather used to tell storied about a man called Gray Cloud. He died a long time ago. They say he was  55  by lightning during a terrible thunderstorm. Why do you ask?”

36. A. Something 

B. Everything

C. Anything   

D. Nothing

37.A.dropped 

B. fell 

C. rolled 

D. covered

38.A.Suddenly 

B. Strongly 

C. Quickly 

D. Hardly

39.A.beating 

B. blinding 

C. burning 

D. touching

40.A.nose 

B. hair 

C. neck 

D. head

41.A.looked up 

B. woke up 

C. lay down 

D. sat down

42.A.tiger 

B. horse 

C. lion 

D. elephant

43.A.lazily 

B. angrily 

C. coldly 

D. slowly

44.A.natural 

B. common 

C. strange 

D. bad

45.A.around 

B. beside 

C. through 

D. above

46.A.yet 

B. for 

C. so 

D. or

47.A.walking 

B. leading 

C. heading 

D. returning

48.A.them 

B. themselves 

C. him 

D. himself

49.A.shook 

B. waved 

C. held 

D. took

50.A.gone 

B. left 

C. followed 

D. lost

51.A.see 

B. meet 

C. beat 

D. ask

52.A.waited 

B. thought 

C. worried 

D. excited

53.A.yard 

B. wind 

C. grass 

D. rain

54.A.believe 

B. consider 

C. doubt 

D. forget

55.A.defeated 

B. caught 

C. damaged 

D. struck

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

One day, Raul was miles away from the small ranch(牧場) house in a large valley.   36

seemed to be all right, yet he felt strange and somewhat uneasy. The wind had picked up, and angry, dark clouds   37  across the sky. He could smell the rain coming. And it did.  38  ,the lightning flashed through the clouds, nearly   39    Raul. The thunder(雷聲) was so loud that he buried his  40   in his hands and rubbed his eyes. Then he heard it. Hoof beats(蹄聲).He   41  .There before him stood a tall, white   42  . An old man stared down at him from its back.

      “Wh-wh-who are y-y-you?” asked Raul. “My name is Gray Cloud,” the old man answered   43  .“Come with me.”

      Raul followed on his horse. A   44   feeling came over him. All    45    them the rain was pouring down,  46    not a drop fell on them. They seemed to be  47   back toward Raul’s home. Raul lost track of time. Then all at once he found  48  at the ranch gate. The old man turned his horse,  49  his hand, and smiled. Lightning flashed again. The old man and his horse were  50 .

Raul’s father ran out across the yard  to   51  him. “we have been  52  sick about you. Are you okay? Hurry. Let’s get in out of the  53  .”

   “Wait,” said Raul. “Have you ever heard of an old man called Gray Cloud?”

   “Can’t say I … wait. I  54  my great-grandfather used to tell storied about a man called Gray Cloud. He died a long time ago. They say he was  55  by lightning during a terrible thunderstorm. Why do you ask?”

36. A. Something             B. Everything            C. Anything              D. Nothing

37.A.dropped                   B. fell                       C. rolled                   D. covered

38.A.Suddenly                 B. Strongly               C. Quickly                D. Hardly

39.A.beating                    B. blinding                C. burning                D. touching

40.A.nose                        B. hair                      C. neck                    D. head

41.A.looked up                B. woke up               C. lay down              D. sat down

42.A.tiger                        B. horse                   C. lion                      D. elephant

43.A.lazily                       B. angrily                 C. coldly                  D. slowly

44.A.natural                     B. common              C. strange                D. bad

45.A.around                    B. beside                  C. through                D. above

46.A.yet                          B. for                       C. so                       D. or

47.A.walking                   B. leading                 C. heading                D. returning

48.A.them                       B. themselves           C. him                     D. himself

49.A.shook                      B. waved                  C. held                     D. took

50.A.gone                       B. left                      C. followed              D. lost

51.A.see                          B. meet                    C. beat                     D. ask

52.A.waited                     B. thought                C. worried                D. excited

53.A.yard                        B. wind                    C. grass                   D. rain

54.A.believe                     B. consider               C. doubt                   D. forget

55.A.defeated                  B. caught                 C. damaged              D. struck

 

查看答案和解析>>

科目:高中英語 來源:2012-2013學(xué)年浙江省溫州中學(xué)高二上學(xué)期期末考試英語試卷(帶解析) 題型:完型填空

One day, Raul was miles away from the small ranch (牧場)house in a large valley. Everything seemed to be all right, yet he felt strange and somewhat uneasy. The wind had picked up, and angry, dark clouds  31  across the sky. He could smell the rain coming. And it did.  32 , the lightning flashed through the clouds, nearly  33  Raul. The thunder (雷聲) was so loud that he buried his head in his hands and rubbed his eyes. Then he heard it — hoof beats (蹄聲). He  34 . There before him stood a tall, white horse. An old man stared down at him from its back.
“Wh-wh-who are y-y-you?” asked Raul. “Oh, my name is Gray Cloud,” the old man answered  35 , “come with me.”
Raul followed on with his horse. A  36  feeling came over him. All  37  them the rain was pouring down,  38  not a drop fell on them. They seemed to be  39  back toward Raul’s home. Raul lost track of time. Then all at once, he found  40  at the ranch gate. The old man turned his horse, waved his hand, and smiled. Lightning flashed again. The old man and his horse were  41 .
Raul’s father ran out across the yard to  42  him. “We have been  43  about you. Are you okay? Hurry. Let’s get in out of the  44 .”
“Wait,” said Raul. “Have you ever heard of an old man called Gray Cloud?”
“Can’t say I … wait. I believe my great-grandfather used to tell stories about a man called Gray Cloud. He died a long time ago. They all say he was  45  by lightning during a terrible thunderstorm. Why do you ask?” At this, Raul was really more shocked than puzzled.

【小題1】
A.droppedB.fellC.rolledD.covered
【小題2】
A.SuddenlyB.StronglyC.QuicklyD.Hardly
【小題3】
A.beatingB.blindingC.burningD.touching
【小題4】
A.looked upB.woke upC.lay downD.sat down
【小題5】
A.lazilyB.a(chǎn)ngrilyC.freelyD.slowly
【小題6】
A.naturalB.commonC.strangeD.sad
【小題7】
A.a(chǎn)roundB.besideC.throughD.a(chǎn)bove
【小題8】
A.yetB.forC.soD.or
【小題9】
A.reachingB.leadingC.headingD.returning
【小題10】
A.themB.themselves C.himD.himself
【小題11】
A.goneB.leftC.followedD.lost
【小題12】
A.seeB.meetC.beatD.a(chǎn)sk
【小題13】
A.waitedB.thoughtC.worriedD.excited
【小題14】
A.yardB.windC.grassD.rain
【小題15】
A.defeatedB.caughtC.damagedD.struck

查看答案和解析>>

科目:高中英語 來源:2014屆浙江省高二上學(xué)期期末考試英語試卷(解析版) 題型:完型填空

One day, Raul was miles away from the small ranch (牧場)house in a large valley. Everything seemed to be all right, yet he felt strange and somewhat uneasy. The wind had picked up, and angry, dark clouds  31  across the sky. He could smell the rain coming. And it did.  32 , the lightning flashed through the clouds, nearly  33  Raul. The thunder (雷聲) was so loud that he buried his head in his hands and rubbed his eyes. Then he heard it — hoof beats (蹄聲). He  34 . There before him stood a tall, white horse. An old man stared down at him from its back.

“Wh-wh-who are y-y-you?” asked Raul. “Oh, my name is Gray Cloud,” the old man answered  35 , “come with me.”

Raul followed on with his horse. A  36  feeling came over him. All  37  them the rain was pouring down,  38  not a drop fell on them. They seemed to be  39  back toward Raul’s home. Raul lost track of time. Then all at once, he found  40  at the ranch gate. The old man turned his horse, waved his hand, and smiled. Lightning flashed again. The old man and his horse were  41 .

Raul’s father ran out across the yard to  42  him. “We have been  43  about you. Are you okay? Hurry. Let’s get in out of the  44 .”

“Wait,” said Raul. “Have you ever heard of an old man called Gray Cloud?”

“Can’t say I … wait. I believe my great-grandfather used to tell stories about a man called Gray Cloud. He died a long time ago. They all say he was  45  by lightning during a terrible thunderstorm. Why do you ask?” At this, Raul was really more shocked than puzzled.

1.                A.dropped        B.fell            C.rolled    D.covered

 

2.                A.Suddenly       B.Strongly        C.Quickly   D.Hardly

 

3.                A.beating         B.blinding         C.burning   D.touching

 

4.                A.looked up       B.woke up        C.lay down  D.sat down

 

5.                A.lazily           B.a(chǎn)ngrily          C.freely    D.slowly

 

6.                A.natural         B.common        C.strange   D.sad

 

7.                A.a(chǎn)round         B.beside          C.through  D.a(chǎn)bove

 

8.                A.yet            B.for            C.so   D.or

 

9.                A.reaching        B.leading         C.heading  D.returning

 

10.               A.them          B.themselves      C.him  D.himself

 

11.               A.gone          B.left            C.followed   D.lost

 

12.               A.see            B.meet          C.beat  D.a(chǎn)sk

 

13.               A.waited         B.thought        C.worried   D.excited

 

14.               A.yard           B.wind           C.grass D.rain

 

15.               A.defeated       B.caught         C.damaged  D.struck

 

 

查看答案和解析>>

同步練習(xí)冊答案