职称英语考试

试题来源：职称英语模拟题-卫生类-阅读理解

LightNight, Dark Stars

Thousands of people around the globe stepoutside 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 starsin the sky, says Dennis Ward, an astronomer with the University Corporation forAtmospheric Research (UCAR) in Boulder, Colo1. But when people are surroundedby city lights, he says, they're lucky to see 150 stars.

If you've ever driven toward a big city atnight and seen its glow from a great distance, you've witnessed lightpollution. It occurs when light from streetlights, office buildings, signs, andother 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 York glow from light pollution, making stargazing2 difficult.

Dust and particles of pollution from factoriesand industries worsen the effects of light pollution. "If one city has alot more light pollution than another," Ward says, "that city willsuffer the effects of light pollution on a much greater scale. "

Hazy skies also make it far more difficult forastronomers to do their jobs.

Cities are getting larger. Suburbs are growingin once dark, rural areas. Light from all this new development is increasinglyobscuring the faint light given off by distant stars. And if scientists can'tlocate these objects, they can't learn more about them.

Light pollution doesn't only affect starvisibility. It can harm wildlife too. It's clear that artificial light canattract animals, making them go off course3. There's increasing evidence, forexample, that migrating birds use sunsets and sunrises to help find their way,says Sydney Gauthreaux Jr., a scientist at Clemson University in SouthCarolina. "When light occurs at night," he says, "it has a verydisruptive influence. " Sometimes birds fly into lighted towers,high-rises, and cables from radio and television towers. Experts estimate thatmillions 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.

42.Which of the following statements is NOTrelated to light pollution

A.A haze of light is formed from artificiallights such as streetlights and building lights.

B.Lights from different sources stream intospace and illuminate the night sky.

C.The night sky is illuminated by the lightsfrom big glowing cities in the night.

D.Stargazing becomes difficult because there isa layer of haze in the air

43.Why does the writer think growing citiesaffect astronomers' work

A.Because the once dark rural areas arepolluted by lights.

B.Because they can still see stars in ruralareas.

C.Because rural areas are not a good place forastronomers to study stars.

D.Because faint light given off by stars canstill be seen on a clear night

44.Which of the following is NOT correct

A.Animals may go off course due to theattraction of artificial lights.

B.Animals might be attracted by artificial lightsto go into cities.

C.Artificial lights at night may make migratingbirds lose their way.

D.Attracted by artificial lights, birds flyinto lighted buildings.

45.Which of the following is closest in meaningto the title "Light Night, Dark Stars"

A.The night sky is light colored and stars areblack.

B.Lights appear at night and stars are seen inthe dark.

C.City lights illuminate the night sky and makestars invisible.

D.City lights at night illuminate stars in thesky.

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网考网参考答案：C、D、A、B、C
网考网解析：进入考试题库查看解析
大数据分析：根据网考网与考试题库的统计，该试题：
66%的考友选择了A选项
11%的考友选择了B选项
7%的考友选择了C选项
16%的考友选择了D选项
考友解析与评论：
 · 题目都看不懂，整个就是乱蒙。
 · 这一题我选择的是C、D、A、B、C
 · 呵呵 犯了同样的错