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
[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
admin
2023-03-22
41
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.
D→【D1】→【D2】→【D3】→【D4】→【D5】→B
【D5】
选项
答案
F
解析
文章末段B中提到人们希望新政策能解决these kinds of questions,可见前一段应提出了具体待解决的问题。F首句指出研究人员和决策者下一步要做的就是共同决定哪种污染源是最大的元凶(where can we spend the dollars that would have the most benefit?),这就是具体要做的事情,要解决的问题。故F应为B的前一段。
转载请注明原文地址:https://kaotiyun.com/show/57MD777K
0
考研英语一
相关试题推荐
Skepticsofhighereducationoftencomplainthatuniversitiesoffertoomanyboringdegreeswithlittlevalueintheworkplace.【
ZoeBuhlerwasscheduledforanultrasoundappointmentontheSeptembermorningwhenAustralianpoliceenteredherhome.Thepre
Inourcontemporaryculture,theprospectofcommunicatingwith—orevenlookingat—astrangerisvirtuallyunbearable.Everyone
Inourcontemporaryculture,theprospectofcommunicatingwith—orevenlookingat—astrangerisvirtuallyunbearable.Everyone
[A]Makeitahabit[B]Don’tgoitalone[C]Startlow,goslow[D]Talkwithyourdoctor[E]Listentoyourbo
Peoplehavespeculatedforcenturiesaboutafuturewithoutwork.Todayisnodifferent,withacademics,writers,andactivists
Theworldisonthetopofastaggeringriseinthenumberofoldpeople,andtheywilllivelongerthaneverbefore.【C1】_______
Publicrelationsisabroadsetofplannedcommunicationsaboutthecompany,includingpublicityreleases,designedtopromoteg
[A]PunitShah,aresearcheratKing’sCollegeLondon,investigatedhowtheperceptionofinternalbodilysensationsisrelated
随机试题
设y=sinx,则dy等于().
下列关于胎儿股骨长正确的描述有
A.2级低视力B.5级盲C.1级低视力D.3级盲E.4级盲根据WH01973年视力损伤的分类,左眼最佳矫正视力0.25,右眼最佳矫正视力0.2,该患者属于
以下区域不属于《建设项目环境影响评价分类管理名录》中所称的环境敏感区中的“自然、文化保护地”的是()。
根据下面资料,作答下列问题。某市一位优秀的班主任李某,只因为按照规定减轻学生的负担,放手培养学生的创新能力,却使班级的综合成绩下降到年级组的倒数第二名,成为差班之一。压力之下,在寒假之前的家长会上,这位教师哭着向家长们鞠躬道歉,并表示今后将加大作
原型化设计是软件工程中常用的方法,根据作用的不同,原型有3种类型:探索型、()和进化型。
【B1】【B15】
Meteorologistsroutinelytelluswhatnextweek’sweatherislikelytobe,andclimatescientistsdiscusswhatmighthappenin1
Justiceinsocietymustincludebothafairtrialtotheaccusedandtheselectionofanappropriatepunishmentforthoseprove
A、Hehimselfisveryfattoo.B、Theassessmentsystemisnotsound.C、Peopleshouldhavetheirownfreedom.D、Itmaycausealot
最新回复
(
0
)