Light Night, Dark StarsThousands of people around the globe step outside to gaze at their - 试题答案网问答

第1题

Which of the following is closest in meaning to the title "Light Night, Dark Stars" ？A．The

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.

点击查看答案

第2题

Which of the following is closest in meaning to the title "Light Night, Dark Stars&

quot;？

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

点击查看答案

第3题

The title "Light Night, Dark Stars" means______A．the night sky is brightly lit up and star

The title "Light Night, Dark Stars" means______

A．the night sky is brightly lit up and stars are black.

B．lights appear at night and stars are seen in the dark.

C．city lights at night illuminate stars in the sky.

D．city lights illuminate the night sky, making stars invisible.

点击查看答案

第4题

35 The title "Light Night, Dark Stars" meansA the night sky is brightly lit up and stars a

35 The title "Light Night, Dark Stars" means

A the night sky is brightly lit up and stars are black.

B lights appear at night and stars are seen in the dark.

C city lights at night illuminate stars in the sky.

D city lights illuminate the night sky, making stars invisible

点击查看答案

第5题

Light coloring is one of the advantages of large desert animals because ______.A．it helps

Light coloring is one of the advantages of large desert animals because ______.

A．it helps their body temperature to rise at night

B．it contributes to a buildup of heat during the first few hours of daylight

C．it doesn't absorb sunlight as much as dark colors

D．it helps them to keep cool at night

点击查看答案

第6题

Why does the writer think growing cities affect astronomers' work？A.Because the once

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

点击查看答案

第7题

Light Night, Dark Stars Thousands of people aroundthe globe step outside to gaze at their

Light Night, Dark Stars

Thousands of people aroundthe globe step outside to gaze at their night sky. On a clear night, with no clouds, moonlight, or artificiallights to block the view, people can see more than 14,000 stars in the sky, says Dennis Ward, anastronomer with the University Corporation for Atmospheric Research (UCAR) in Boulder, Colo.But when people are surrounded by city lights, he says, they're lucky to see 150 stars.

If you've ever driventoward a big city at night and seen its glow from a great distance, you've witnessed light pollution. It occurs whenlight from streetlights, office buildings, signs, and other

sources streams into space and illuminates the night sky. This haze oflight makes many stars invisible to people on Earth. Even at night, big citieslike New Yorkglow from light pollution, making stargaz-ing difficult.

Dust and particles ofpollution from factories and industries worsen the effects of lightpollution."If one city has a lot more light pollution than another,"Ward says, "that city will suffer the effectsof light pollution on a muchgreater scale. "

Hazy skies also make it farmore difficult for astronomers to do their jobs.

Cities are getting larger.Suburbs are growing in once dark, rural areas. Light from all this newdevelopment is increasingly obscuring the faint light given off by distantstars. And if scientists can't locate these objects, they can't learn moreabout them.

Light pollution doesn't onlyaffect star visibility. It can harm wildlife too. It's clear that artificiallight can attract animals,'making them go off course. There's increasingevidence, for example, that migrating birds use sunsets and sunrises to helpfind their way, says Sydney Gauthreaux Jr. , a scien- tist at Clemson Universityin South Carolina."When light occurs at night, " he says, "it has a very dis- ruptive influence." Sometimes birds fly into lighted towers, high-rises, and cables fromradio and tele- vision towers. Experts estimate that millions of birds die thisway 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 n:ght sky is clear of clouds, moonlight and artificial lights

D.When the night sky is without haze and fog

点击查看答案

第8题

下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个最佳选项。第一篇Light Night, Da

下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个最佳选项。

第一篇

Light Night, Dark Stars

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 (天文学家) with the University Corporation for Atmospheric Research (UCAR) in Boulder, Colo. 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 (照亮) the night buildings, signs, and other sources streams into space and illuminates ~ sky. This haze (朦胧) of light makes many stars invisible to people on Earth. Even at night, big cities like New York glow from light pollution, making stargazing 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 (使变模糊) the faint (微弱的) 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 course. There's increasing evidence, for example, that migrating (迁徙) 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 (破坏性的) 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.

31 On a clear night, people can see

A 150 stars.

B hundreds of stars.

C one thousand stars.

D more than 14,000 stars.

点击查看答案

第9题

We all associate colors with feelings and attitudes. In politics, dark blue often means "t

radition", and red means "social change". But blue can also mean sadness (I'm feeling blue). White is often for purity, although in China white is worn for funerals, and red is used to express the joy of a wedding, in western Europe white is worn at weddings and black for funerals. Advertisers are aware of the importance of selecting colors according to the way people react to them. Soap powders come in white and light blue packets (clean and cold, like ice); cereals often come in brown packets (tike wheat fields), but cosmetics never come in brown jars (dirty).

Where do these ideas come from？ Max Luscher from the University of Geneva believes that in the beginning life was dictated by two factors beyond our control: night and day. Night brought passivity, and a general slowing down of metabolism; day brought with it the possibility of action, and increased in the metabolic rate, thus providing us with energy and initiative. Dark blue, therefore, is the color of quietness and passivity, bright yellow the color of hope and activity.

In prehistoric times, activity as a rule took one of two forms: either we were hunting and at- tacking, or we were being hunted and defending ourselves against attack. Attack is universally re- presented by the color red; serf-preservation by its complement green.

In Luseher's view, the association of colors with feeling and attitudes can be traced back to______.

A．the association of day and night with passivity and action in ancient time

B．the association of black with funerals in western Europe

C．the association of white with purity in some countries

D．the association of red with joy in China

点击查看答案

第10题

Colors Associated with Feeling and AttitudesWe all associate colors with feeling and attit

Colors Associated with Feeling and Attitudes

We all associate colors with feeling and attitudes. In politics dark blue often means" tradition", and red means "social change". But blue can also mean sadness (I'm feeling blue ), white is often for purity, although in China white is worn for funerals, and red is used to express the joy of a wedding, in Western Europe white is worn at weddings and black for funerals. Advertisers are aware of the importance of selection colors according to the way people react to them. Soap powders come in white and light blue packets (clean and cold, like ice ); cereals often come in brown packets (like wheat fields ), but cosmetics never come in brown jars (dirty !).

Where do these ideas come from？ Max Luscher from the University of Geneva believes that in the beginning life was dictated by two factors beyond our control: night and day. Night brought passivity, and a general slowing down of metabolism (新陈代谢); day brought with it the possibility of action, and increase in the metabolic rate, thus providing us with energy and initiative. Dark blue, therefore, is the color of quiet and passivity, bright yellow the color of hope and activity.

In prehistoric times, activity as a rule took one of two forms: either we were hunting and attacking, or we were being hunted and defending ourselves against attack. Attack is universally represented by the color red; self-preservation by its complement green.

In Luscher's view, the association of colors with feeling and attitudes can be traced back to______.

A．the association of day and night with passivity and action in ancient time

B．the association of black with funerals in Western Europe

C．the association of white with purity in some countries

D．the association of red with joy in China

点击查看答案