题目内容

_____ from lightweight materials, the robots are about the size of a human arm or smaller.

A. To build                   B. Being built         C. Having built              D. Built

D
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Most animals have little connection with animals of a different kind, unless they hunt them for food. Some­times, however, two kinds of animals come together in a partnership(伙伴关系) which does good to both of them. You may have noticed some birds sitting on the back of sheep. This is not because they want a ride, but because they find easy food in the parasites(寄生虫）on sheep. The sheep allow the birds to do so be­cause they remove the cause of discomfort. So although they can manage without each other, they do better together.

Sometimes an animal has a plant partner. The rela­tionship develops until the two partners cannot do with­out each other. This is so in the corals(珊瑚）of the sea. In their skins they have tiny plants which act as “dustman”, taking some of the waste products from the coral and giving in return oxygen which the animal needs to breathe. If the plants are killed, or are even prevented from light so that they cannot live normally, the corals will die.

1.Some birds like to sit on a sheep because _________.

A. they can eat its parasites

B. they consider the sheep as their shelter

C. they enjoy traveling with the sheep

D. they find the position most comfortable

2.The underlined word “they” in the first paragraph refers to _______.

A. birds and parasites                                              B. sheep, birds and parasites

C. parasites and sheep                                            D. birds and sheep

3.It can be learnt from the text that the coral depends on the plants for ________.

A. comfort                                     B. light                         C. oxygen                    D. food     

4.What does the second paragraph mainly discuss?

A. Some plants depend on each other for food.

B. Some animals and plants develop their relationship easily.

C. Some animals and plants depend on each other for existence.

D. Some animals live better together.

 

Last night’s meteor(流星) shower left many people in the community dissatisfied and demanding answers. According to Gabe Rothsclild, Emerald Valley’s mayor, people gathered in the suburbs of the city, carrying heavy telescopes, expecting to watch the brightly burning meteors passing through the sky. What they found instead was a sky so brightened by the city’s lights that it darkened the light of the meteors passing overhead.

 “My family was so frustrated,” admitted town resident Duane Cosby, “We wanted to make this an unforgettable family outing, but it turned out to be a huge disappointment. ”

       Astronomers—scientists who study stars and planets—-have been complaining about this problem for decades. They say that light pollution prevents them from seeing objects in the sky that they could see quite easily in the past. They call on people and the government to take measures to fight against it.

 There is yet a population besides professional and amateur star observers that suffers even more from light pollution. This population consists of birds, bats frogs, snakes, etc. For example, outdoor lighting severely affects migrating(迁徙的)birds. According to the International Dark-Sky Association. “100 million birds a year throughout North America die in crashes with lighted buildings and towers. ”

 Countless more animals casualties(伤亡）result from the use of artificial lighting. Clearly, people enjoy the benefits of lighting their evenings, but some scientists think it can be harmful for humans, too. They worry that exposure to light while sleeping can increase person’s chances of getting cancer.

        Emerald Valley is only one community that is becoming aware of the negative effects of light pollution. For years, Flagstaff,Arizona,has enforced lighting regulations in its city in order to assist astronomers at the Lowell Observatory. Similar efforts have been made worldwide, and a movement is underway to remind us to turn off lights when we are not using them, so that other creatures can share the night.

1. What is the author concerned about according to Paragraph 4?

A. Birds may take other migration paths

B. Animals’ living habits may change suddenly

C. Varieties of animals will become sharply reduced

D. Animals’ survival is threatened by outdoor lighting

2.Lighting regulations in Flagstaff, Arizona are put into effect to

A. Lessen the chance of getting cancer

B. create an ideal observation condition

C. ensure citizens a good sleep at night

D. enable all creatures to live in harmony

3. What message does the author most want to give us?

A. Saving wildlife is saving ourselves

B. Great efforts should be made to save energy

C. Human activities should be environmentally friendly

D. New equipment should be introduced for space study

 

Last night’s meteor (流星) shower left many people in the community dissatisfied and demanding answers. According to Gabe Rothschild, Emerald Valley’s mayor, people gathered in the suburbs of the city, carrying heavy telescopes, expecting to watch the brightly burning meteors passing through the sky. What they found instead was a sky so brightened by the city’s lights that it darkened the light of the meteors passing overhead.

“My family was so frustrated,” admitted town resident Duane Cosby, “We wanted to make this an unforgettable family outing, but it turned out to be a huge disappointment.”

Astronomers—scientists who study stars and planets—have been complaining about this problem for decades. They say that light pollution prevents them from seeing objects in the sky that they could see quite easily in the past. They call on people and the government to take measures to fight against it.

There is yet a population besides professional and amateur star observers that suffers even more from light pollution. This population consists of birds, bats, frogs, snakes, etc. For example, outdoor lighting severely affects migrating (迁徙的) birds. According to the International Dark-Sky Association, “100 million birds a year throughout North America die in crashes with lighted buildings and towers.”

Countless more animal casualties (伤亡) result from the use of artificial lighting. Clearly, people enjoy the benefits of lighting their evenings. But some scientists think it can be harmful for humans, too. They worry that exposure to light while sleeping can increase a person’s chances of getting cancer.

Emerald Valley is only one community that is becoming aware of the negative effects of light pollution. For years, Flagstaff, Arizona, has enforced lighting regulations in its city in order to assist astronomers at the Lowell Observatory. Similar efforts have been made worldwide, and a movement is underway to remind us to turn off lights when we are not using them, so that other creatures can share the night.

1.It happened last night that _____.

A．the city’s lights affected the meteor watching

B．the meteors flew past before being noticed

C．the city light show attracted many people

D．the meteor watching ended up a social outing

2.What do the astronomers complain about?

A．Meteor showers occur less often than before.

B．Their observation equipment is in poor repair.

C．Light pollution has remained unsolved for years.

D．Their eyesight is failing due to artificial lighting.

3.What is the author concerned about according to Paragraph 4?

A．Birds may take other migration paths.

B．Animals’ living habits may change suddenly

C．Varieties of animals will become sharply reduced

D．Animals’ survival is threatened by outdoor lighting.

4.Lighting regulations in Flagstaff, Arizona are put into effect to _____.

A．lessen the chance of getting cancer

B．create an ideal observation condition

C．ensure citizens a good sleep at night

D．enable all creatures to live in harmony

5.What message does the author most want to give us?

A．Saving wildlife is saving ourselves.

B．Great efforts should be made to save energy.

C．Human activities should be environmentally friendly.

D．New equipment should be introduced for space study..

 

More than a hundred adults and kids gather for the Star Party on a cold evening, chattering excitedly as they stand in the dark on a Virginia hillside. The odd thing is, no one has turned on a flashlight, and no streetlights or house lights wink(闪烁) on around them.

These people have traveled to the countryside more than an hour from Washington, D. C., to get away from the glow of city lights.  That's because they are attending a star party. Star parties are gatherings where professional and amateur astronomers set up their telescopes and invite people to come learn about the night sky. Getting away from light pollution, or artificial skylight from buildings for example,  helps stargazers (看星星的人) see objects in the sky much better.

At this star party, Sean O'Brien of the National Air and Space Museum’s Einstein Planetarium starts off by asking the crowd to simply look up and take in all they can see. He points out plenty of things that can be seen without special equipment. Stars, satellites, and even the Andromeda galaxy(仙女座) can be found if you know where to look.

After that, several dozen astronomers offer close-up views. Each has focused their telescope on a different part of the sky. As kids take a look, the owner gives a mini-lesson.

O’Brien says you can have your own star party at home and learn a lot just by paying attention to what's happening up above. "Watch the sky as the seasons pass, and you will see that it changes," he says. "Or start with the moon. Notice when and where you are seeing it—maybe even in the early morning while you wait for the school bus. "

1.What was it special about the Star Party ?

A．It was organized by the local authority.

B．It was carried out without any lights.

C．It was so cold that people chatted to cheer up.

D．It was held in the town center of Virginia

2.According to the passage, who were involved in the activity ?

a. some invited guests

b. some government officials

c. some experts in astronomy

d. those who were interested in astronomy

e. students who were major in agriculture

A．a, c, d

B．a, d, e

C．b, d, e

D．c, d, e

3.From the passage, we can infer that if you want to see the objects in the sky            .

A．you'd better escape from pollution and sunlight

B．you'd better follow Sean O'Brien's guidance

C．you'd better buy some advanced equipment

D．you'd better make use of your imagination

4.Which of the following can be best describe what O'Brien says about discovering the stars'?

A．Roman is not built in a day.

B．No pains, no gains.

C．All roads lead to Roman.

D．Time and tide wait for no man.

 

More than a hundred adults and kids gather for the Star Party on a cold evening, chattering excitedly as they stand in the dark on a Virginia hillside. The odd thing is, no one has turned on a flashlight, and no streetlights or house lights wink(闪烁) on around them.
These people have traveled to the countryside more than an hour from Washington, D. C., to get away from the glow of city lights.  That's because they are attending a star party. Star parties are gatherings where professional and amateur astronomers set up their telescopes and invite people to come learn about the night sky. Getting away from light pollution, or artificial skylight from buildings for example,  helps stargazers (看星星的人) see objects in the sky much better.
At this star party, Sean O'Brien of the National Air and Space Museum’s Einstein Planetarium starts off by asking the crowd to simply look up and take in all they can see. He points out plenty of things that can be seen without special equipment. Stars, satellites, and even the Andromeda galaxy(仙女座) can be found if you know where to look.
After that, several dozen astronomers offer close-up views. Each has focused their telescope on a different part of the sky. As kids take a look, the owner gives a mini-lesson.
O’Brien says you can have your own star party at home and learn a lot just by paying attention to what's happening up above. "Watch the sky as the seasons pass, and you will see that it changes," he says. "Or start with the moon. Notice when and where you are seeing it—maybe even in the early morning while you wait for the school bus. "

  1. 1.

    What was it special about the Star Party ?

    1. A.
      It was organized by the local authority.
    2. B.
      It was carried out without any lights.
    3. C.
      It was so cold that people chatted to cheer up.
    4. D.
      It was held in the town center of Virginia
  2. 2.

    According to the passage, who were involved in the activity ?
    a. some invited guests
    b. some government officials
    c. some experts in astronomy
    d. those who were interested in astronomy
    e. students who were major in agriculture

    1. A.
      a, c, d
    2. B.
      a, d, e
    3. C.
      b, d, e
    4. D.
      c, d, e
  3. 3.

    From the passage, we can infer that if you want to see the objects in the sky            .

    1. A.
      you'd better escape from pollution and sunlight
    2. B.
      you'd better follow Sean O'Brien's guidance
    3. C.
      you'd better buy some advanced equipment
    4. D.
      you'd better make use of your imagination
  4. 4.

    Which of the following can be best describe what O'Brien says about discovering the stars'?

    1. A.
      Roman is not built in a day.
    2. B.
      No pains, no gains.
    3. C.
      All roads lead to Roman.
    4. D.
      Time and tide wait for no man.

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