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
医学
People have worried about smog for many years, and the government has spent billions of dollars to try to clean up the air of bi
People have worried about smog for many years, and the government has spent billions of dollars to try to clean up the air of bi
admin
2013-10-31
49
问题
People have worried about smog for many years, and the government has spent billions of dollars to try to clean up the air of big cities. Now we find that there is no escape from unhealthful air. Recent studies have shown that air inside many homes, office buildings, and schools is full of pollutants; chemicals, bacteria, smoke, and gases. These pollutants are causing a group of unpleasant and dangerous symptoms that experts call "sick building syndrome". A "sick building" might be a small house in a rural area or an enormous office building in an urban center.
A recent study reached a surprising conclusion: Indoor air pollution is almost always two to five times worse than outside pollution! This is true even in buildings that are close to factories that produce chemicals. The solution to this problem would seem very clear; Open your windows and stay out of modern office buildings with windows that don’t open.
Unfortunately, the solution might not be so simple, better ventilation—a system for moving fresh air—can cut indoor air pollution to a safe level, but lack of ventilation is seldom the main cause of the problem. Experts have found that buildings create their own pollution. Imagine a typical home. The people who live there burn oil, wood, or gas for cooking and heating. They might smoke cigarettes, pipes, or cigars. They use chemicals for cleaning. They use hundreds of products made of plastic or particle board; these products—such as the shelves in Oakland High School— give off chemicals that we can’ t see but that we do breathe in. And in many areas, the ground under the building might send a dangerous gas called radon into the home. The people in the house are breathing in a "chemical soup" , and medical experts don’t yet know how dangerous this is for the human body.
In the first paragraph the author is trying to draw our attention______.
选项
A、to the improved quality of outdoor air
B、to the risks of unhealthy air
C、to the sources of pollutants
D、to indoor pollution
答案
D
解析
第一段主要是要点出室内污染以及其所导致的“sick building syndrome”。
转载请注明原文地址:https://kaotiyun.com/show/UnU3777K
本试题收录于:
医学博士外语题库考研分类
0
医学博士外语
考研
相关试题推荐
Imagineadiseasespreadingacrosstheglobe,killingmostlymiddle-agedpeopleorleavingthemchronicallydisabled.Thenoned
Cultureshockmightbecalledanoccupationaldiseaseofpeoplewhohavebeensuddenlytransplantedabroad.Likemostailments,
A、Heisstillworriedabouthisskinproblem.B、Herecommendsanointmenttothewoman.C、Hedidn’tseethedoctorforhisskin
OFFTHECHANNELISLANDS,California—Largenumbersofgiantendangeredbluewhaleshavegatheredoffshoreattractingdozensofma
OFFTHECHANNELISLANDS,California—Largenumbersofgiantendangeredbluewhaleshavegatheredoffshoreattractingdozensofma
Despitegrowingnumbersofjoggers,CanadaFitnessSurveysacrossthecountrydemonstratethatCanadiansarelessphysicallyfit
Despitegrowingnumbersofjoggers,CanadaFitnessSurveysacrossthecountrydemonstratethatCanadiansarelessphysicallyfit
Theideaoftest-tubebabiesmaymakeyoueitherdelightedatthewondersofmodernmedicineorirritatedwhileconsideringthe
Theideaoftest-tubebabiesmaymakeyoueitherdelightedatthewondersofmodernmedicineorirritatedwhileconsideringthe
随机试题
在激励中赏罚分明,赏罚适度,不论亲疏,一视同仁,使受奖者心安理得,受罚者心服口服是指激励的()
准备进行骨髓移植的患者需要输血改善贫血症状,首选的血液制品为
桥架内大于45。倾斜敷设的电缆每隔3m处设固定点。()
登记机关可以为“一平方米单位”出售的房屋办理权属登记手续。()
证券组合的()表示了所有可能的证券组合。
下列各项中,符合增值税专用发票开具时限规定的是()。
对于公务员招录中有关工作经验和年龄限制的规定,你怎么看?
第七次全国人口普查结果显示,我国人口过亿的省份有()。
在发达国家的产业结构中,服务业占了很高的比重。根据他们的经验,提高服务业占比就可以促进就业。但是,服务业具有较高的进入壁垒,这也是我国服务业发展相对滞后的一个重要原因。因此,我国可以通过打破服务业的行业壁垒进一步促进就业。 以下最可能是上述论证潜在假设的
It’sgenerallyagreedthatthegreatestthreatfacingtheworldtodayisthewarmingoftheearth’satmosphere,commonlycalled
最新回复
(
0
)