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
Soot—also known as black carbon—heats up the atmosphere because it absorbs sunlight. But for years the institutions that focus o
Soot—also known as black carbon—heats up the atmosphere because it absorbs sunlight. But for years the institutions that focus o
admin
2015-07-31
581
问题
Soot—also known as black carbon—heats up the atmosphere because it absorbs sunlight. But for years the institutions that focus on climate policy have played down the role of pollutants such as black carbon that stay in the atmosphere for a short time and concentrated on carbon dioxide, which, once generated, tends to remain there. That may soon change.
A new study concluded that the soot was the second-most-damaging greenhouse agent after CO
2
and about twice as bad for the climate as had been thought until now. The implications are profound. It found that the black carbon around at the moment has a warming effect of about 1.1 w/m
2
. This is greater than that of methane(甲烷)and second only to the 1. 7 w/m
2
of carbon dioxide.
Black carbon is especially damaging to frozen regions, because when soot falls on snow and ice it increases the amount of light and heat they absorb. The new assessment may therefore help explain why the Arctic has been melting faster than anyone had expected. The study argues that warming is likely to be especially marked in the high latitudes of the northern hemisphere— northern Canada, Alaska, northern Europe and Siberia. It also gives a warning that black carbon, by changing regional precipitation(降水)patterns, may affect Asian monsoons(季风).
The biggest impact of soot, though, is not on the climate but on health—through lung and other diseases. A study reckoned that controlling emissions of black carbon could save 2.4 million lives a year, regardless of any effects on the climate.
It might seem that the new study is one more item of bad environmental news. Not so. It should be easier to deal with black carbon than with CO
2
. Whereas CO
2
is long-lasting and an inevitable by-product of burning fossil fuels, soot drops out of the atmosphere within weeks. Stop putting it there and it will rapidly go away—a potentially easy win. Dealing with them is also cheaper than cutting CO
2
emissions and does not need global agreement, because the local benefits would be the main point, so no one could free-ride on the emission-cutting efforts of others. Instead, the good of the climate would be free-riding on local self-interest.
Compared with CO
2
, what is the good aspect of soot?
选项
A、It does less harm to human health.
B、It is easy to get rid from the atmosphere.
C、It can stay in the atmosphere much longer.
D、It makes no contribution to the climate changes.
答案
B
解析
推理判断题。定位句表明,看上去新的研究又是一条关于环境的坏消息,但是并非如此。换句话说,作者认为这并不是一条坏消息,而是一条好消息。接下来作者进行了解释,即煤烟更容易处理。所以B)符合原文的意思,是正确答案。
转载请注明原文地址:https://kaotiyun.com/show/Acl7777K
0
大学英语四级
相关试题推荐
A、Thebehavioroftheplayersandspectators.B、Theinternationallevelofthesports.C、Theattitudeofthespectatorsandthe
Newevidenceofasick,deprivedpopulationworkingunderharshconditionscontradictsearlierimagesofwealthandabundancefr
IntheAmericanfamily,thehusbandandwifeusuallyshareimportantdecision-making.Whenthechildrenareoldenough,theytak
Today,Americanfilmmakersproducemovieswithfewrestraintsaboutviolence,sexualityandadultlanguage.Butthiswasnotalw
Theadvantagesanddisadvantagesofalargepopulationhavelongbeenasubjectofdiscussionamongeconomists.Ithasbeenargu
ResearchersattheLondonSchoolofHygieneandTropicalMedicinepublishedastudyshowingthat,becauseoffoodproductionand
Urbanlifehasalwaysinvolvedabalancingofopportunitiesandrewardsagainstdangersandstress;its【C1】______forceis,inth
Urbanlifehasalwaysinvolvedabalancingofopportunitiesandrewardsagainstdangersandstress;its【C1】______forceis,inth
Urbanlifehasalwaysinvolvedabalancingofopportunitiesandrewardsagainstdangersandstress;its【C1】______forceis,inth
Boilerroomsareoftendirtyandsteamy,butthisoneispristine(干净的)andcool.FoxPointisaspankingnew47-unit【C1】______bui
随机试题
我国作家程某创作完成小说《天有多高》,出版后大卖,程某因此获得50万元稿酬,用该笔稿酬购买了一辆新能源电动汽车。后该小说在国外获奖,由某国际组织发放奖金60万元,并被外国某电影公司购买了改编权,获得该公司支付的特许权使用费150万元。关于程某纳税的税款.下
某甲因涉嫌盗窃他人5000元人民币被人民检察院提起公诉,本案的被害人是一名外国人,本案的管辖法院应该是
Whatisthemeaningofnon-discriminationprinciple?
甲状腺功能亢进患者,停用甲巯咪唑指征
下列关于我国海事关系的法律适用的说法正确的是哪几项?()
元朝中央最高行政机关是()。
案例 2016年10月8日,某省D煤矿发生一起井下火灾事故,导致12名被困人员全部遇难。经初步调查,煤矿起火原因主要是由于距主井井底起平点30m处的压风机老化渗油,开关蹦火引起火灾,并引燃木支护,巷道垮塌,导致被困矿工窒息死亡。 根据以上场景,回答下列
来华外国旅游者的签证属于()签证。
Illiteracymaybeconsideredmoreasanabstractconceptthanacondition.WhenafamousEnglishwriterusedthe(1)_____overt
--IsMr.Fanthere7ThereissomethingIreallyneedtotalktohimabout.--No,heisout.
最新回复
(
0
)