Do you forget to turn off the lights and heaters when you go out of a room? In 2040 it will not matter. They will turn themselves off — and on again when you return. You will choose the temperature for each room, the lighting and the humidity. A sensor will detect the presence of a human and turn the systems on, and when the humans leave, it will turn them off again.
The sensors will work through the central home computer, and they will do much more than just turn the fires and lights on and off for you. They will detect faulty electrical appliances, plugs or switches, isolate them so that they cannot harm anyone, and then warn you that they need repair. They will detect fire and if you are out of the house, the computer will call the fire brigade. It will also call the police should the sensors detect an intruder. This will not be very difficult because the locks on the outside doors will be electronic. You'll open them using your personal card — the one you use for shopping — maybe using a number known only to you.
It will be impossible to lose the key, and a house breaker will have to tamper(撥弄) with the lock or with a window. It is not very difficult to make such tampering send a signal to the computer.
The computer will be more than a fireman-policeman-servant. It will be an entertainer, and most of your entertainment will come right into your home. It does now, of course, but by 2040 "entertainment" will mean much more. For one thing, you will be able to take part actively, rather than just waiting.
1.What will happen in 2040 according to the writer?
A.Lights and heaters will function automatically.
B.Temperature will be fixed in all of your rooms.
C.A sensor will tell whether you are in or out.
D.Household appliances will be rejected.
正確答案:A
2.Which one is NOT mentioned as the function of the sensors?
A.They can remind you of repairing the faulty appliances.
B.They can detect some burglars.
C.They can keep you safe from the dangerous plugs.
D.They can call the brigade and the police if necessary.
正確答案:D
3.Which of the following statements is NOT true according to the writer?
A.You can open the doors by using a private number.
B.You can open the doors by your personal shopping cards.
C.The house breaker will be found out by the sensors when he unlocks the door with your key.
D.Without the key, a house breaker will have to tamper with the lock or with a window.
正確答案:C
4.What will the life in 2040 be like?
A.People will be free from the keys used today.
B.People will be free from all kinds of locks.
C.There will be no criminals in the world.
D.All family things will be controlled by censors instead of human beings.
正確答案:A
5.Computer will be more beneficial to human beings in 2040 because we
A.can use a computer to enjoy all the amusement they need.
B.can take part in the entertainment more actively.
C.can use the computer to call the policemen, firemen and servants.
D.can use computer as the only tool to get amusement
正確答案:B
Thousands of people around the globe step outside to gaze at their night sky. On a clear night, with no clouds, moonlight, or artificial lights to block the view, people can see more than 14,000 stars in the sky, says Dennis Ward, an astronomer with the University Corporation for Atmospheric Research (UCAR) in Boulder, Colo1. But when people are surrounded by city lights, he says, they're lucky to see 150 stars.
If you've ever driven toward a big city at night and seen its glow from a great distance, you've witnessed light pollution. It occurs when light from streetlights, office buildings, signs, and other sources streams into space and illuminates the night sky. This haze of light makes many stars invisible to people on Earth. Even at night, big cities like New York glow from light pollution, making stargazing2 difficult.
Dust and particles of pollution from factories and industries worsen the effects of light pollution. "If one city has a lot more light pollution than another," Ward says, "that city will suffer the effects of light pollution on a much greater scale. "
Hazy skies also make it far more difficult for astronomers to do their jobs.
Cities are getting larger. Suburbs are growing in once dark, rural areas. Light from all this new development is increasingly obscuring the faint light given off by distant stars. And if scientists can't locate these objects, they can't learn more about them.
Light pollution doesn't only affect star visibility. It can harm wildlife too. It's clear that artificial light can attract animals, making them go off course3. There's increasing evidence, for example, that migrating birds use sunsets and sunrises to help find their way, says Sydney Gauthreaux Jr., a scientist at Clemson University in South Carolina. "When light occurs at night," he says, "it has a very disruptive influence. " Sometimes birds fly into lighted towers, high-rises, and cables from radio and television towers. Experts estimate that millions of birds die this way every year.
41.When can people see 14,000 stars
A.When they have a fairly good telescope.
B.When they are in a large city.
C.When the night sky is clear of clouds, moonlight and artificial lights.
D.When the night sky is without haze and fog.
正確答案:C
42.Which of the following statements is NOT related to light pollution
A.A haze of light is formed from artificial lights such as streetlights and building lights.
B.Lights from different sources stream into space and illuminate the night sky.
C.The night sky is illuminated by the lights from big glowing cities in the night.
D.Stargazing becomes difficult because there is a layer of haze in the air
正確答案:D
43.Why does the writer think growing cities affect astronomers' work
A.Because the once dark rural areas are polluted by lights.
B.Because they can still see stars in rural areas.
C.Because rural areas are not a good place for astronomers to study stars.
D.Because faint light given off by stars can still be seen on a clear night
正確答案:A
44.Which of the following is NOT correct
A.Animals may go off course due to the attraction of artificial lights.
B.Animals might be attracted by artificial lights to go into cities.
C.Artificial lights at night may make migrating birds lose their way.
D.Attracted by artificial lights, birds fly into lighted buildings.
正確答案:B
45.Which of the following is closest in meaning to the title "Light Night, Dark Stars"
A.The night sky is light colored and stars are black.
B.Lights appear at night and stars are seen in the dark.
C.City lights illuminate the night sky and make stars invisible.
D.City lights at night illuminate stars in the sky.
正確答案:C
The sensors will work through the central home computer, and they will do much more than just turn the fires and lights on and off for you. They will detect faulty electrical appliances, plugs or switches, isolate them so that they cannot harm anyone, and then warn you that they need repair. They will detect fire and if you are out of the house, the computer will call the fire brigade. It will also call the police should the sensors detect an intruder. This will not be very difficult because the locks on the outside doors will be electronic. You'll open them using your personal card — the one you use for shopping — maybe using a number known only to you.
It will be impossible to lose the key, and a house breaker will have to tamper(撥弄) with the lock or with a window. It is not very difficult to make such tampering send a signal to the computer.
The computer will be more than a fireman-policeman-servant. It will be an entertainer, and most of your entertainment will come right into your home. It does now, of course, but by 2040 "entertainment" will mean much more. For one thing, you will be able to take part actively, rather than just waiting.
1.What will happen in 2040 according to the writer?
A.Lights and heaters will function automatically.
B.Temperature will be fixed in all of your rooms.
C.A sensor will tell whether you are in or out.
D.Household appliances will be rejected.
正確答案:A
2.Which one is NOT mentioned as the function of the sensors?
A.They can remind you of repairing the faulty appliances.
B.They can detect some burglars.
C.They can keep you safe from the dangerous plugs.
D.They can call the brigade and the police if necessary.
正確答案:D
3.Which of the following statements is NOT true according to the writer?
A.You can open the doors by using a private number.
B.You can open the doors by your personal shopping cards.
C.The house breaker will be found out by the sensors when he unlocks the door with your key.
D.Without the key, a house breaker will have to tamper with the lock or with a window.
正確答案:C
4.What will the life in 2040 be like?
A.People will be free from the keys used today.
B.People will be free from all kinds of locks.
C.There will be no criminals in the world.
D.All family things will be controlled by censors instead of human beings.
正確答案:A
5.Computer will be more beneficial to human beings in 2040 because we
A.can use a computer to enjoy all the amusement they need.
B.can take part in the entertainment more actively.
C.can use the computer to call the policemen, firemen and servants.
D.can use computer as the only tool to get amusement
正確答案:B
Thousands of people around the globe step outside to gaze at their night sky. On a clear night, with no clouds, moonlight, or artificial lights to block the view, people can see more than 14,000 stars in the sky, says Dennis Ward, an astronomer with the University Corporation for Atmospheric Research (UCAR) in Boulder, Colo1. But when people are surrounded by city lights, he says, they're lucky to see 150 stars.
If you've ever driven toward a big city at night and seen its glow from a great distance, you've witnessed light pollution. It occurs when light from streetlights, office buildings, signs, and other sources streams into space and illuminates the night sky. This haze of light makes many stars invisible to people on Earth. Even at night, big cities like New York glow from light pollution, making stargazing2 difficult.
Dust and particles of pollution from factories and industries worsen the effects of light pollution. "If one city has a lot more light pollution than another," Ward says, "that city will suffer the effects of light pollution on a much greater scale. "
Hazy skies also make it far more difficult for astronomers to do their jobs.
Cities are getting larger. Suburbs are growing in once dark, rural areas. Light from all this new development is increasingly obscuring the faint light given off by distant stars. And if scientists can't locate these objects, they can't learn more about them.
Light pollution doesn't only affect star visibility. It can harm wildlife too. It's clear that artificial light can attract animals, making them go off course3. There's increasing evidence, for example, that migrating birds use sunsets and sunrises to help find their way, says Sydney Gauthreaux Jr., a scientist at Clemson University in South Carolina. "When light occurs at night," he says, "it has a very disruptive influence. " Sometimes birds fly into lighted towers, high-rises, and cables from radio and television towers. Experts estimate that millions of birds die this way every year.
41.When can people see 14,000 stars
A.When they have a fairly good telescope.
B.When they are in a large city.
C.When the night sky is clear of clouds, moonlight and artificial lights.
D.When the night sky is without haze and fog.
正確答案:C
42.Which of the following statements is NOT related to light pollution
A.A haze of light is formed from artificial lights such as streetlights and building lights.
B.Lights from different sources stream into space and illuminate the night sky.
C.The night sky is illuminated by the lights from big glowing cities in the night.
D.Stargazing becomes difficult because there is a layer of haze in the air
正確答案:D
43.Why does the writer think growing cities affect astronomers' work
A.Because the once dark rural areas are polluted by lights.
B.Because they can still see stars in rural areas.
C.Because rural areas are not a good place for astronomers to study stars.
D.Because faint light given off by stars can still be seen on a clear night
正確答案:A
44.Which of the following is NOT correct
A.Animals may go off course due to the attraction of artificial lights.
B.Animals might be attracted by artificial lights to go into cities.
C.Artificial lights at night may make migrating birds lose their way.
D.Attracted by artificial lights, birds fly into lighted buildings.
正確答案:B
45.Which of the following is closest in meaning to the title "Light Night, Dark Stars"
A.The night sky is light colored and stars are black.
B.Lights appear at night and stars are seen in the dark.
C.City lights illuminate the night sky and make stars invisible.
D.City lights at night illuminate stars in the sky.
正確答案:C