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
Most people are aware that outdoor air pollution can damage their health, but many do not know that indoor air pollution can als
Most people are aware that outdoor air pollution can damage their health, but many do not know that indoor air pollution can als
admin
2011-01-01
47
问题
Most people are aware that outdoor air pollution can damage their health, but many do not know that indoor air pollution can also【67】health significantly. Environmental Protection Agency studies【68】that indoor levels of pollutants may be 2-5 times, and【69】more than 100 times, higher than outdoor levels.
There are many sources of indoor air pollution in any【70】. These include combustion (燃烧) sources, products for home cleaning and【71】, personal care, or hobbies; central heating and cooling systems and humidification【72】; and outdoor air pollution.
【73】effects may show up after a single exposure or【74】exposures. These include irritation of the eyes, nose, and throat, headaches, dizziness, and【75】. Such effects are usually short-term and【76】. Sometimes the treatment is simply【77】the person’s exposure to the source of the pollution,【78】it can be identified.【79】of some diseases may also show up soon after exposure to some indoor air pollutants.
Certain effects are similar to those from colds or other viral (病毒引起的) diseases,【80】it is often difficult to【81】if the symptoms are a result of exposure to indoor air pollution.【82】this reason, it is important to pay attention to the time and place the symptoms【83】. If the symptoms fade or go away when a person is away from home and return when the person returns,【84】should be made to identify indoor air sources that may be possible【85】. Some effects may be made worse by an【86】supply of outdoor air or from the heating, cooling, or humidity conditions prevalent in the home.
选项
A、By
B、Since
C、For
D、As
答案
C
解析
For this reason为固定表达“由于这种原因”。
转载请注明原文地址:https://kaotiyun.com/show/FRy7777K
0
大学英语四级
相关试题推荐
Withalotofpatiencewithoneself,mostpeople______(成功克服了文化冲击).
A、Itcouldhelppeopleofallagestoavoidcancer.B、Itwasmainlymeantforcancerpatients.C、Itmightappealmoretoviewers
A、Thetwopeoplecanlearnabouteachother’slikesanddislikes,B、Thetwopeoplecanhaverimetodecideiftheyareagoodma
A、Gothroughahealthcheck,B、Takelittleluggagewiththem.C、Arriveearlyforboarding.D、Undergosecuritychecks.B从题目选项可以得知
ThepollutionofHongKong’sbeachesbyoilfromadamagedtankerlastyearrecallsasimilarincidentwhichtookplaceinBrita
ThepollutionofHongKong’sbeachesbyoilfromadamagedtankerlastyearrecallsasimilarincidentwhichtookplaceinBrita
ThepollutionofHongKong’sbeachesbyoilfromadamagedtankerlastyearrecallsasimilarincidentwhichtookplaceinBrita
A、HowIndonesiacametobeinhabited.B、HowthePolynesianislandscametobeinhabited.C、HowthePolynesianpeopletraveledfr
A、Todoublelastyear’sfood-aid.B、Toraise$122millionforIraqipeople.C、ToprovideeachIraqifamilywith$26amonth.D、
随机试题
下列哪项检查最有助于葡萄胎的诊断
类风湿性关节炎与风湿性关节炎不同的临床特征是
公路隧道检测技术涉及面广,内容多,其中包括()等。
某部门的乙烯炼化一体化原油储运配套工程,原油管线全长230km,设计输油量2000万t/a,储油罐140万m3。工程分4个站场工程和6条线路工程,在首站建6座10万m。外浮顶油罐,在一个分输站建8座10万m3外浮顶油罐,无组织排放废气主要是原油储罐呼吸
项目后评价的三个层次是()。
长江流域,无疑也是中华民族文化的______之一。考古发现______,旧石器时代处于长江上游今云南境内的元谋人,与黄河流域今陕西境内的蓝田人______。这个结论具有划时代的意义。填入划横线部分最恰当的一项是()。
设α1,α2,α3,β1,β2都是四维列向量,且|A|=|α1,α2,α3,β1|=m,|B|=|α1,α2,β2,β3|=n,则|α1,α2,β1+β2|为().
以下描述中错误的是
使用VC6打开源程序文件modi3.cpp。此程序的功能是将out1.txt文件中的内容输出到屏幕与文件中。输出如下:李一1.78m21王一1.65m23out2.txt文件的内容如下:李一1
DifferentKindsofMeetingsNowadays,therearethousandsofinternationalmeetingsheldworldwideeveryyear.However,the
最新回复
(
0
)