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
On cold days in Delhi, the poor light bonfires (篝火) of tyres, trees and rags whose fumes mix with the exhaust from the city’s 2
On cold days in Delhi, the poor light bonfires (篝火) of tyres, trees and rags whose fumes mix with the exhaust from the city’s 2
admin
2014-03-22
15
问题
On cold days in Delhi, the poor light bonfires (篝火) of tyres, trees and rags whose fumes mix with the exhaust from the city’s 2 million vehicles to form a thick smog. On most days in Mexico City, a blanket of pollution cuts off views of the surrounding mountains. On one famous occasion it got so bad that birds fell dead out of the sky on to the Zocalo, the city’s main square. Throughout the developing world, smogs in many big cities are getting worse as more people use cars and more manufacturing firms are belching out (喷出) pollution. Congestion is on the rise, too- according to one estimate, a car in Bangkok now spends the equivalent of 40 days a year stuck in traffic. The air in Asia’s cities, like the water in its rivers, is particularly unhealthy, containing levels of dust and smoke several times higher than in the rich countries’ cities.
Environmentalists in the developed world also worry about air pollution in poorer countries, not just out of the goodness of their hearts but because they fear it may affect their own backyard. Carbon-dioxide emissions, thought to be the cause of global warming, are growing particularly fast in developing countries. So are emissions of sulphur dioxide, blamed for acid rain, which sometimes falls hundreds of miles from the source of the pollution.
But the harm that air pollution causes in the developing countries themselves is much more serious and immediate. The biggest concern are indoor air pollution, lead emissions and small particles. Indoor pollution in poor countries is not much talked about, but it is often as damaging to health as smoking cigarettes. Around a third of all energy consumed in developing countries comes from wood, crop residues and dung, which are often burnt in poorly designed stoves within ill-ventilated (通风很差的) huts. Studies of women in India and Nepal exposed to smoke from such fuels show that their death rates from chronic respiratory disease are similar to those of heavy smokers.
Lead has long been known to be dangerous in large doses. But only since the 1970s have scientists been aware that relatively small quantities of lead in the bloodstream can be harmful to humans. In particular, many studies show a correlation between levels of lead in children’s blood and lower IQ scores, hearing loss and hyperactivity (活动过度).
But the kind of air pollution thought to cause the most damage to human health in developing countries is that from small particles. Caused by vehicle exhausts, coal-burning smoke from factories and dust stirred up by vehicles, these particles easily find their way into people’s lungs. Studies the world over have shown a strong positive correlation between small particles in the air and death rates.
The kind of air pollution that is most harmful to health is caused by______.
选项
A、lead emissions
B、carbon-dioxide emissions
C、sulphur dioxide emissions
D、small particles
答案
D
解析
细节题。根据最后一段,对身体健康危害最大的空气污染是产生自微小颗粒(small particles)。故D是正确答案。
转载请注明原文地址:https://kaotiyun.com/show/1iXO777K
0
在职攻硕英语联考
相关试题推荐
Thereisnodenyingthatstudentsshouldlearnsomethingabouthowcomputerswork,justasweexpectthematleasttounderstand
It’sveryinterestingtonotewherethedebateaboutdiversity(多样化)istakingplace.Itistakingplaceprimarilyinpoliticalci
TheInternetisaglobalnetworkthatconnectsothercomputernetworks,togetherwithsoftwareandprotocolsforcontrollingthe
However,attimesthisbalanceinnatureis______,resultinginanumberofpossiblyunforeseeneffects.
Certainlypeopledonotseemlessinterestedinsuccessandwhatitcandoforusnowthanformerly.Summerhomes,Europeanvaca
Afour-yearcollegedegree,seenforgenerationsasatickettoabetterlife,is【C1】______enoughtoguaranteeasteadilyrising
Economicandfinancialglobalizationhaslentimportant()toeconomicgrowthinrecentdecades,especiallyinemergingmarkets.
Whatweconsideraluxuryatonetimefrequentlybecomesa______;manyfamiliesfindthatownershipoftwocarsisindispensable
It’sallannualback-to-schoolroutine.Onemorningyouwavegoodbye,andthat【C1】______eveningyou’reburningthelate-nightoi
Man:I’mreallyexhausted.ButIdon’twanttomissthefilmthatcomesonatWoman:IfIwereyou,I’dskipit.Webothhaveto
随机试题
职能部门化
透皮制剂中加入二甲基亚砜(DMSO)的目的是
痛泻要方中配伍防风的主要意义是
税收管理权中包括()。
某企业2007年10月进行清算,全部资产价值500元,清算费用20万元,全部负债300万元,未分配利润10元,资本公积40万元,注册资本金120万元。该企业清算时应缴纳企业所得税()万元。
正n棱锥的侧棱与底面所成的角为α,侧面与底面所成的角为β,则tanα:tanβ为().
圩田
数据库系统一般由()部分组成。
在考生文件夹下,打开文档word.docx,按照要求完成下列操作并以该文件名(word.docx)保存文档。【文档开始】国书与谎话美国首任总统乔治·华盛顿家里有许多国书,国书中还夹杂一些杂树,为让国书生长茂盛,应该将杂树除掉。一天,华盛顿给儿子一把
Eachcompanyhasmany"publics’whoshouldbeablenotonlyrecognizeitsname【21】______tocorrectlyidentifyitsindustrya
最新回复
(
0
)