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
There is no question that the old style of air pollution could kill people. In one week following the infamous "peasouper" fog i
There is no question that the old style of air pollution could kill people. In one week following the infamous "peasouper" fog i
admin
2012-10-23
44
问题
There is no question that the old style of air pollution could kill people. In one week following the infamous "peasouper" fog in December 1952, 4,700 people died in London. Most of these people were elderly and already had heart or lung diseases. A series of these killer fogs eventually led to the British Passing the Clean Air Act which restricted the burning of coal.
Fortunately the effect of smog on the lungs is not so dramatic. Scientists have now conducted a number of laboratory experiments in which volunteers are exposed to ozone inside a steel chamber for a few hours. Even at quite low concentrations there is a reversible fall in lung function, an increase in the irritability of the lungs and evidence of airway inflammation (发炎) . Although irritable and inflamed lungs are particularly seen in people with asthma (哮喘) and other lung diseases, these effects of ozone also occur in healthy subjects. Similar changes are also seen after exposure to nitrogen dioxide, although there is some disagreement about the concentration at which they occur.
Other studies have found that people living in areas with high levels of pollution have more symptoms and worse lung function than those living in areas with clean air. Groups of children attending school camps show falls in lung function even at quite low concentrations of ozone. There is also a relationship between ozone levels and hospital admissions for asthma, both in North America and Australia. It is suspected that long-term exposure to smog may result in chronic bronchitis (支气管炎) and emphysema (肺气肿), but this has yet to be proven.
Recently an association has been found between the levels of particles in the air and death rates in North American cities. The reason for this association is not understood and as vet there is no evidence this occurs in Australia. However, we do know that hazy days are associated with more asthma attacks in children.
Which of the following is NOT mentioned as a possible cause of lung diseases?
选项
A、The burning of coal
B、Long-term exposure to smog
C、Exposure to nitrogen dioxide
D、Attending school camps
答案
D
解析
Attending school camps。该题要选择不是lung disease的原因的选项,另外三项在原文中作者都用确凿的口吻说明是lung disease的原因,比如第一段结尾处“A series of these killer fogs eventually led to the British Passing the Clean Air Act which restricted the burning of coal.”,其他 B、C两项在原文中也有涉及。而D项,Groups of children attending school camps show falls in lung function even at quite low concentrations of ozone.这里有助于分析文章的信息来自even at quite low concentrations of ozone,而非Groups of children attending school camps,换言之,对于文章的理解而言,Groups of children attending school camps并无实际作用,只会干扰读者的分析思路。
转载请注明原文地址:https://kaotiyun.com/show/Ao9O777K
0
考博英语
相关试题推荐
Thefirstmanwhocookedhisfood,insteadofeatingitraw,livedsolongagothatwehavenoideawhohewasorwherehelived
Uponreachinganappropriateage(usuallybetween18and21years),childrenareencouraged,butnotforced,to"leavethenest"
Besidethepleasurablesoundsofmusicandexpressivefeelingthatit______,musicdoesexistintermsofnotesthemselvesand
【56】Astateuniversitypresidentwasarrestedtodayandchargedwithimpersonateapoliceofficerbecause,theauthoritiessay,
【56】Astateuniversitypresidentwasarrestedtodayandchargedwithimpersonateapoliceofficerbecause,theauthoritiessay,
DanisHayesraisedtheessentialparadoxandaskedhowpeoplecouldhavefoughtsohardagainstenvironmentaldegradation______
Althoughvocalcordsarelackingincetaceans,phonationisundoubtedlycenteredinthelarynx.Thetoothedwhalesorodonto
Therearesomeverybeautifully______glasswindowsinthechurch.
Generally,itisonlywhenanimalsaretrappedthatthey______toviolenceinordertoescape.
Hewas_______whenheheardtheunexpectednews,butIfinallyconvincedhim.
随机试题
关于磁共振对比剂的临床应用,错误的是
叶广胜为某村村民,老伴去世早,独自将两个儿子抚养成人。大儿子叶军高中毕业后,去南方打工并在当地结婚,与家中来往甚少。小儿子叶伟在家务农,结婚后与年事已高的父亲同住。因考虑到大儿子经济条件较好,小儿子夫妇又如此孝顺,叶老汉于1995年写下一份遗嘱,自己的三间
一单色平行光垂直入射到光栅上,已知衍射图中缺级的级数为k=3,6,…,则光栅的缝宽a与不透光部分b的关系为()。
根据《建设工程工程量清单计价规范》规定,工程量清单漏项或设计变更引起的新的工程量清单项目,其相应综合单价由()提出。
某建筑企业为增值税一般纳税人,位于A市市区,2019年6月发生如下业务:(1)在机构所在地提供建筑服务,开具增值税专用发票,注明金额400万元、税额36万元。另在B市C县城提供建筑服务,取得含税收入218万元,其中支付分包商工程价款,取得增值税专用发票,
我国要求资本充足率不得低于()。
很多高中毕业生由于对大学毕业以后的就业前景感到担忧,放弃了参加高考,对此,正确的观点是()。
根据天津市民政局颁发的《市财政局市人力社保局市残联关于完善分类救助有关政策的通知》(津民发[2017]11号),()家庭,将家庭收入扣除1200元。
某公司本年度需耗用乙材料36000千克,该材料采购成本为300元/千克,年度储存成本为10元/千克,平均每次进货费用为200元,在途时间(即订货提前期或交货期)为7天,单位缺货成本为8元,保险储备量为200千克。一年按360天来计算。要求计算乙
Accordingtothenewschoolofscientists,technologyisanoverlookedforceinexpandingthehorizonsofscientificknowledge.
最新回复
(
0
)