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
考研
[A] One of the reasons making air cleaner can have so immediate an effect is that even a little dirt can do a lot of damage. A r
[A] One of the reasons making air cleaner can have so immediate an effect is that even a little dirt can do a lot of damage. A r
admin
2019-09-15
58
问题
[A] One of the reasons making air cleaner can have so immediate an effect is that even a little dirt can do a lot of damage. A reduction of just 10 micrograms of pollution per cubic meter of air—a degree of improvement many of the surveyed cities were able to attain during the two-decade-plus period-could extend human life-spans a full nine months. How small is 10 micrograms per cubic meter? Consider that simply by living with a cigarette smoker, you’re exposed to a daily dose of 20 to 30.
[B] As with so many other things, President Barack Obama’s coming into power has people hoping that these kinds of questions will be more aggressively addressed than they were over the past eight years. Even during the most heated days of the fall campaign, neither candidate went so far as to promise longer life in exchange for a vote. But a smart environmental policy could deliver just that.
[C] The benefits of cleaner air may even be felt in towns whose skies weren’t that dirty to begin with. Those that began with the very lowest levels still saw health benefits from small improvements. The evidence isn’t yet there to determine whether those benefits would continue growing until the fine-particle pollution got down to zero; one of the cities closest to that, Albuquerque, New Mexico, still hovers around 5 micrograms per cubic meter. But at this point, it doesn’t seem that the benefits decrease. "If it continues to follow what we’ve observed, it appears that there are health benefits down to very low levels of exposure," says Dr. Pope, the study’s lead author.
[D] Nobody pretends that polluted air isn’t terrible for your health. Clean up the skies over any dirty city, and the people who live there will all but certainly become healthier. That, at least, has been popular wisdom, but until now, no one had ever put it to a statistical test. Now someone has, and the results are striking: according to a study just published, when local governments decide to remove the smog, local residents actually live an average of five months longer.
[E] Pittsburgh, Pennsylvania, for example, is one city in the survey that was at the 30-microgram level before the decline of the steel industry in the 1980s drove the dirt out of the skies—even as it drove jobs out of town. Pittsburgh was one of the biggest winners in the new study, with residents gaining roughly 10 months in life expectancy over what they had when the mills were still churning.
[F] The next step for both researchers and policymakers is determining which sources of dirt—power plants, motor vehicles, other industrial polluters—make the biggest contributions to particle levels and thus should be most aggressively targeted. "In a difficult economic situation," asks Dr. Douglas Dockery, "where can we spend the dollars that would have the most benefit?"
[G] In order to reach so precise a finding, the study’s authors had to do some exhaustive number-crunching, surveying pollution rates and longevity in 51 cities across the U.S. over a 21-year period from 1979 to 2000. Overall, they found that lifespan in all of the areas increased by an average of nearly three years—from 74 to 77—as a result of a host of factors, most notably reduced smoking and improved income. But 15% of the change was attributable to cleaner air.
选项
答案
G
解析
D为首段,其末句引用了一个study得出的结果,可推测后一段应该会详细介绍该研究,比如方法、过程和结果等。G恰恰给出了该项研究的相关信息和数据,并且G首句中的so precise a finding和前文中具体的数字(an average of five months)对应,因此G应紧跟在D之后。
转载请注明原文地址:https://kaotiyun.com/show/7A2Z777K
0
考研英语一
相关试题推荐
TheBibleisthegreatworkofthereligiousliteratureandwasinprocessofformationforabouttwelvehundredyears.TheB
[A]Whathavetheyfound?[B]Isittruethatlaughingcanmakeushealthier?[C]Sowhydopeoplelaughsomuch?[D]W
[A]Whattodoasastudent?[B]Variousdefinitionsofplagiarism[C]Ideasshouldalwaysbesourced[D]Ignorancecan
Researchonanimalintelligencealwaysmakesmewonderjusthowsmarthumansare.【B1】______thefruit-flyexperimentsdescribed
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand1
Peopleare,onthewhole,pooratconsideringbackgroundinformationwhenmakingindividualdecisions.Atfirstglancethismigh
Readthefollowingtextandchoosethebestanswerfromtherightcolumntocompleteeachoftheunfinishedstatementsinthele
"Thisisareallyexcitingtime—aneweraisstarting,"saysPeterBazalgette,thechiefcreativeofficerofEndemol,thetelev
What’saman?Or,indeed,awoman?Biologically,theanswermightseemobvious.Ahumanbeingisa(n)【C1】______whohasgrownfr
Cellphoneusehasexplodedinmanycountries,easingcommunicationbetweenindividualsbutcausingsocialmalaiseaswell.Int
随机试题
眩晕痰湿中阻证的主要症状有
国外仲裁机构的裁决,需要在我国人民法院承认与执行的,应当由当事人直接向被执行人住所地或者财产所在地的()
如果承包商未能按合同条款指定的项目投保,并保证保险有效,业主可以投保并保证保险有效,业主所支付的必要保险费可在应付给承包商的款项中扣回。这类索赔属于业主向承包商进行的( )索赔。
计算机病毒传播是指病毒从一个程序或数据文件侵入另一个程序或数据文件的过程。()
下列选项中,出自《学记》的有()
请用不超过150字的篇幅,概括出给定资料所反映的主要问题。就给定资料所反映的主要问题,用1200字左右的篇幅,自拟标题进行论述。要求中心明确,内容充实,论述深刻,有说服力。
质疑和否定是人类文化最积极活泼的精神,它不断触发新生力量去打破________平衡.建立新平衡。从自然、社会、群体到个人,从宏观世界到微观世界,轮回更替________,每一种存在形态都是对旧秩序的反抗和否定.从而形成的一种崭新的相对平衡。填入划横线部分最
当生产力发展到一定水平,一部分人有可能脱离生产劳动,当语言的发展到了文字的出现后,便出现了()。
A、 B、 C、 C
许多遭到洪水侵害的农场主说,他们别无选择只得解雇一些工人。(havenochoicebut)
最新回复
(
0
)