首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The night is not what it was. Once, the Earth was cast perpetually (永恒地) half in shadow. Man and beast slept beneath inky skies,
The night is not what it was. Once, the Earth was cast perpetually (永恒地) half in shadow. Man and beast slept beneath inky skies,
admin
2012-01-27
22
问题
The night is not what it was. Once, the Earth was cast perpetually (永恒地) half in shadow. Man and beast slept beneath inky skies, dotted with glittering stars. Then came fire, candle, and the light bulb, gradually drawing back the curtain of darkness and giving us unprecedented control over our lives.
But a brighter world, as is becoming increasingly clear, has its drawbacks. A study released last week finding that breast cancer is nearly twice as common in brightly-lit communities as in dark ones only added to a growing body of evidence that artificial light threatens public health, wildlife, and possibly even safety.
Those findings are all the more troubling considering that an estimated 30 percent of outdoor lighting — plus even some indoor lighting — is wasted. Ill-conceived, ineffective, inefficient lighting costs U.S. about $10.4 billion a year, according to Bob Gent of the International Dark-Sky Association, a nonprofit that aims to control light pollution, and it generates 38 million tons of carbon dioxide a year.
Motivated by such trends, more than two dozen cities worldwide will go dim on March 29 in an hour-long demonstration. According to the World Wildlife Fund, which is organizing the event, an estimated 2.2 million Australians switched off their lights or took other action during "Earth Hour" last year in Sydney, briefly reducing that city’s energy use by more than 10 percent.
A number of groups are trying to measure light pollution and assess its detrimental (有害 的) effects on the environment in the hope that people will reduce their own contribution to the problem. Last week, as part of an annual program called GLOBE at Night, thousands of students and amateur scientists stared up at the constellation Orion (猎户座星群) from locations across the country and reported how many of its stars they could see. No data are yet available, but in dark, rural areas, says Gent, about 2,000 stars are typically visible at night, compared with "maybe five" in a bright city square — and about 5,000 in centuries past.
People who are working while others are stargazing may face the greatest risks. Nighttime exposure to white light can fuel the growth of tumors (肿瘤), experiments show. Two decades of research indicates that women who work night shifts have usually high rates of breast cancer.
What disadvantages do people have if working at night?
选项
A、They lose the chance to gaze stars.
B、They have a higher risk of health problem.
C、They have less exposure to white light.
D、They are to blame for light pollution.
答案
B
解析
根据题干中的working at night将本题出处定位到末段。该段提到,夜晚工作的人可能面临最大风险。试验显示,晚上暴露在白光下会诱发肿瘤。二十年的研究也表明,通常情况下上夜班的女性患乳腺癌的几率高。由此可知,上夜班的人健康风险更高,故答案为[B]。[A]“他们没有机会看星星”脱离主题,且不符合逻辑。[C]与原文意思相反。上夜班的人是光污染的受害者,而非光污染的制造者,故排除[D]。
转载请注明原文地址:https://kaotiyun.com/show/Edy7777K
0
大学英语四级
相关试题推荐
A、Theywilltakethetranslationworkdespiteattendingnightclass.B、Theytookthenightclasstoacceptthetranslationwork.
ClimateChangeClimatechangeiswithus.Adecadeago,itwasconjecture.Nowthefutureisunfoldingbeforeoureyes.Cana
ClimateChangeClimatechangeiswithus.Adecadeago,itwasconjecture.Nowthefutureisunfoldingbeforeoureyes.Cana
Weknowthekissasaformofexpressing.Butlongbeforeitbecame【C1】______,itwasthecustominmanypartsoftheworldtou
Aperson’shomeisasmuchareflectionofhispersonalityastheclotheshewears,thefoodheeatsandthefriendswithwhomh
Departmentstoresarelargeretailstoressellingmanydifferentkindsofmerchandisearrangedin【B1】______departments.Suchsto
Cultureshockissonamedbecauseoftheeffectithasonpeoplewhentheyenteranewculture.Expertshavebeeninterestedin
Theinterestthatcreativedramaticsgeneratesinstudiesisitsmostobviousadvantage.Thefactthatchildrendevelop【C1】_____
A、theCollegeseniorsB、realteensC、adultsD、groupiesB此题考查听细节的能力。解题关键是要抓住“Asharpcontrastfromthewayrealteenslived...”
Thenightisnotwhatitwas.Once,theEarthwascastperpetually(永恒地)halfinshadow.Manandbeastsleptbeneathinkyskies,
随机试题
背景某工程项目合同工期为18个月,施工合同签订以后,施工单位编制了一份初始网络计划,如下图所示:由于该工程施工工艺的要求,设计计划中工作C,工作H和工作J需共用一台特殊履带吊装起重机械,为此需要对初始网络计划作调整。工作G完成后,由于业主变更施工图
男性,35岁,骨髓有核细胞分类显示:原单核细胞77%,有核红6%,其他细胞17%。应该诊断为
水泥强度等级是其28d抗压强度标准要求的最低值。()
《中华人民共和国城乡规划法》于()全国人民代表大会常务委员会会议通过。
下列各项中,属于事业单位净资产的有()。
在我国老年社区工作中,重点目标人群包括()。
为纪念第二次世界大战中逝去的人们,表达祈求和平愿望而创作的安魂曲是()。
游览花山岩画,船行江流之上,两岸风光旖旎,茂林修竹,清秀_________。不远处的江岸边是一排拔地而起的断岩山,山势陡峭,但郁郁葱葱。临江一面有国画般_________留白的石壁,被苍翠的山脊_________着,格外显眼。填入画横线部分最恰当的一项是:
ManyofCarsonMcCuller’scharactersareisolated,disappointedpeople.
HaveyoueverbeentoVeniceorreadaboutthewell-knowncity?Whatimagescomeintoyourmindwhenyouthinkofit?Justclose
最新回复
(
0
)