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
Light pollution is the glow you can see at night above cities and towns. It is a problem that has been accompanying man ever sin
Light pollution is the glow you can see at night above cities and towns. It is a problem that has been accompanying man ever sin
admin
2013-06-02
54
问题
Light pollution is the glow you can see at night above cities and towns. It is a problem that has been accompanying man ever since he started his first fire some 15 000 years ago, and technology has only made it worse. Light pollution is the stray (杂乱的) light that comes from streetlights, billboard signs, buildings, parking lots, sports arenas and any other source of illumination that is reflected or directed into the atmosphere. Light pollution is made worse with air pollution, as the small particles that float in the air serve to scatter and reflect the light, compounding the problem. The effect of light pollution is to reduce the contrast, and therefore the visibility of dimmer objects in the night sky, which affects professional, as well as amateur astronomers.
Light pollution exists on every continent except Antarctica. Urban light pollution means that one-fifth of the world’s population can no longer see the Milky Way with the naked eye. Many city kids, even if they did peer through the orange smog above their heads, would probably see only a handful of stars. We have lost our view of the stars, and we have mucked up (把......弄脏) our nighttime environment as well.
Lots of people find the ever-brightening night annoying, and animals that are programmed to prefer the dark may avoid brightened habitat. Sea turtles can get lost searching for a beach to lay eggs, and their hatchlings (幼龟) may confuse over-lit beachfront resorts for the ocean horizon, wasting precious energy needed to find the sea and escape predators. Because their necks aren’t yet long enough to see things far away, baby turtles rely on the mirror image of the moon to guide them to the sea, to begin their new life. A car may even hit a particular turtle, which was thinking the light from a nearby city was moonlight reflecting off the ocean waves. Birds that live in and around cities can die because of sky glow, too. The abundance of bright lights can blind them, leading to countless collisions with buildings, billboards and other tall structures.
These are merely a few of the possible negative effects light pollution has on our world. A very serious issue in our modern-day society is that light pollution is a terrible waste of energy since lighting is responsible for one-fourth of all energy consumption worldwide.
Reducing light pollution is not difficult. Light pollution is the easiest type of pollution to end. On an individual level, people can help reduce much sky glow by using lighting only when necessary and by choosing well shielded lighting fixtures. The stars above us are a priceless heritage—not only for astronomers but for all humans. More of our children should be able to look up at night and see that the Milky Way is not just a candy bar.
What is the source of light pollution?
选项
A、Artificial light.
B、Natural light.
C、Indoor light.
D、Outdoor light.
答案
A
解析
细节推断题。由定位句可知,光污染的光源于街灯、广告牌、建筑物、停车场、体育场及其他反射或者直射人大气层的照明光。而这些都不是自然光,是人工的,因此答案为A)。
转载请注明原文地址:https://kaotiyun.com/show/YyB7777K
0
大学英语六级
相关试题推荐
Gotapenhandy?Tobestestimateyourstart-upcosts,you’llneedtomakealistandthemoredetailedthebetter.Asmartway
Gotapenhandy?Tobestestimateyourstart-upcosts,you’llneedtomakealistandthemoredetailedthebetter.Asmartway
Gotapenhandy?Tobestestimateyourstart-upcosts,you’llneedtomakealistandthemoredetailedthebetter.Asmartway
They’rethesortofscoresthatdrivehigh-schoolhistoryteacherstodrink.WhenNewsweekrecentlyasked1000UScitizenstot
Hollywood"Globalized"WhendirectorAdamMcKaypitchedasequel(续集)tohis2004hitmovieAnchorman,hethoughtitwouldb
Kunzgaveupsoftwareengineeringmainlybecauseheearnedlessthanthoseinlaworbusinessfielddid.Manycompaniesencoura
______(与核能引起的弊端相比),thesolarpowercanserveasabettermovetowardthesolutionfortheproblemofenergycrisis.
Largecompaniesneedawaytoreachthesavingsofthepublicatlarge.Thesameproblem,onasmaller【B1】_____,facespractica
Largecompaniesneedawaytoreachthesavingsofthepublicatlarge.Thesameproblem,onasmaller【B1】_____,facespractica
Largecompaniesneedawaytoreachthesavingsofthepublicatlarge.Thesameproblem,onasmaller【B1】_____,facespractica
随机试题
甲亢患者的眼球突出的表现为
传染病的流行过程主要是()。
患者,女,30岁。突然起病,畏寒、发热、全身疼痛、耳鸣6天,伴腰痛、皮疹1天入院。体检:体温38.3℃,血压17/9.0kPa,心率108次/分,颜面潮红,球结膜充血,胸背部可见散在性暗红色斑丘疹,肝肋下未及,脾肋下1cm。血象检查见WBC5.0×109/
项目进度管理中,工作排序是指确定各项工作之间的逻辑关系,这种逻辑关系具体可表现的形式有()。
在项目无资金约束、寿命不同、产出不同的条件下,方案经济比选只能采用()。
一、背景A公司承担某小区的数栋高层住宅楼和室外综合体工程的机电安装工程施工任务。A公司将小区热力管网工程分包给业主指定的B公司,其管材和阀门由A公司采购供应。B公司承建的热力管网安装完毕后,于2010年8月向业主提出竣工验收并通过;A公
明挖基坑采用分级放坡施工,下级坡度宜()上级坡度。
发行人董事会下的审核委员会有成员11名,则独立非执行董事应至少有()名。
如何培养小学生的学习兴趣?
三层客户/服务器结构中,包括客户机、【】和数据库服务器。
最新回复
(
0
)