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
2013-07-20
66
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://www.kaotiyun.com/show/yKn7777K
0
大学英语六级
相关试题推荐
Ahealthylifeisfrequently_________________________.(被认为与开阔的田园和自家生产的食物联系在一起)
TheJapaneseandU.S.governmentsbothstudiedtheconceptof"wiredcities"usingcableTVtodeliverentertainment,informati
A、Itisgoodforimprovingmuscletone.B、Ithelpshimloseweight.C、Ithelpsdevelopmentaltoughness.D、Ithelpsstrengthent
A、Unemployment.B、Familybreakup.C、Mentalproblems.D、Drinking.B女士问男士。在街上流浪的是哪些人,男士说,有失业的,有精神病患者,还有一些酒鬼。这些信息中没有“家庭破裂者”
A、Thewomandoesn’tthinkitaproblemtogetherpassportrenewed.B、Thewomanhasdifficultyrenewingherpassport.C、Thewoma
HealthHealthcouldbedefinedtheoreticallyintermsofcertainmeasuredvalues;forexample,apersonhavingnormalbodyt
A、Ozoneasaformofoxygen.B、Problemscausedbythethinningoftheozonelayer.C、Theoriginofozoneproblems.D、Thelatest
A、Themanwasusingadigitalcamera.B、Thewomantookverygoodpictures.C、Themandidn’ttakeanypicturesofthenightview.
Theyputontheirheadphones,drapeahoodovertheirheadanddriftoffintotheworldof"digitalhighs."VideospostedonYou
A、Sellchildren’smusicandartwork.B、Makevideostohelpprotectchildren.C、Producesafetyequipmentforchildren.D、Lookfo
随机试题
下列关于盈亏临界点的表述中,错误的有()。(2015年学员回忆版)
功效养阴润肺,清心安神的药物是()
下列对于测试法的特征描述中,正确的是()。
居民消费价格指数中的权数当前仍根据()来确定。
垄断可能会比竞争更可取,这是因为()。
简述思维的类型(至少三种分类)。
根据以下资料回答111-116题2008年A省粮食作物播种面积2499.94千公顷,比上年增长0.8%。糖蔗种植面积136.04千公顷,下降1.2%;油料种植面积323.87千公顷,增长4.3%;蔬菜种植面积1112.63千公顷,增长4.5%。2
【托勒密王朝】(PtolemaicDynasty)东北师范大学2017年历史学综合真题
某商品的需求量Q对阶格的弹性为η=pln3,已知该商品的最大需求量为1200,则需求量Q关于价格P的函数关系式为()。
在数据库系统出现系统故障后进行恢复时,对于事务T,如果在日志文件中有BEGINTRANSACTION记录,也有COMMIT记录,但其对数据的修改没有写到数据库中,则数据库管理系统处理这种事务时应执行的操作是【12】。
最新回复
(
0
)