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
Although many of us may feel air-conditioners bring relief from hot, humid or polluted outside air, they pose many potential hea
Although many of us may feel air-conditioners bring relief from hot, humid or polluted outside air, they pose many potential hea
admin
2012-12-26
81
问题
Although many of us may feel air-conditioners bring relief from hot, humid or polluted outside air, they pose many potential health hazards. Much research has looked at how the movement of air inside a closed environment—such as an office building—can spread disease or expose people in the building to harmful chemicals.
One of the more widely publicized dangers is that of Legionnaire’s disease, which was first recognized in the 1970s. This was found to have affected people in buildings with air-conditioning systems in which warm air pumped out of the system’s cooling towers was somehow sucked back into the air intake (通风口), in most cases due to poor design. The warm air, filled with bacteria, was combined with cooled, conditioned air and was then circulated around various parts of the building. Studies showed that even people outside such buildings were at risk if they walked past air exhaust pipes.
Large air-conditioning systems add water to the air they circulate by means of humidifiers (湿度调节器). In older systems, the water used for this process is kept in special reservoirs, the bottoms of which provide breeding grounds for bacteria which can find their way into the ventilation (通风) system. The risk to human health from this situation has been highlighted by the fact that the immune systems (免疫系统) of approximately half of workers in air-conditioned office buildings have developed the ability to fight off the organisms found at the bottom of system reservoirs. But chemicals called "biocides" are added to reservoirs to make them germ-free, and they are dangerous in their own right in sufficient quantities, as they often contain compounds strongly linked to cancers.
Finally, it should be pointed out that the artificial climatic environment created by air-conditioners can also affect us. In a natural environment, whether indoor or outdoor, there are small variations in temperature and humidity. Indeed, the human body has long been accustomed to these normal changes. In an air-conditioned living or work environment, however, body temperatures remain well under 37t, our normal temperature. This leads to a weakened immune system and thus greater exposure to diseases such as colds and flu.
The fact that about half of workers developed the ability to fight off the bacteria may______.
选项
A、relieve people’s worry about the danger caused by the bacteria
B、help people find an effective way to get rid of the bacteria
C、reflect the serious danger brought by the bacteria
D、cause serious disease such as cancers to people
答案
C
解析
事实细节题。本题考查被动语态长句的理解。在第3段第3句中,关键词是highlight,选项C是对原句主谓部分的近义替换。选项A和B在文中皆无提及.选项D是过度使用生物杀灭剂的后果,与本题干的情况无关。
转载请注明原文地址:https://kaotiyun.com/show/NZw7777K
0
大学英语四级
相关试题推荐
EarthquakesInfluenceonthePlanetTheyapproachthetopiccarefully,waryofsoundingmerciless,awarethatthegeologyth
Althoughtheenjoymentofcolorisuniversalandcolortheoryhasallkindsofnamestoit,colorremainsaveryemotionalands
Althoughtheenjoymentofcolorisuniversalandcolortheoryhasallkindsofnamestoit,colorremainsaveryemotionalands
Wegenerallyviewthefamilyasbeingoneofourmoststableinstitutions;yet,ourfamilysystemhas【B1】______anumberofchang
Wegenerallyviewthefamilyasbeingoneofourmoststableinstitutions;yet,ourfamilysystemhas【B1】______anumberofchang
Averyimportantworldproblemistheincreasingnumberofpeoplewhoactuallyinhabitthisplanet.Thelimitedamountoflanda
Languageislearnedprimarilythroughcommunicationwithotherpeople.Researchshowsthatthemorecommunicationchildren【S1】__
PsychologistsatQowl,aprivatefirmlinkedtotheUniversityofPortsmouthanalyzedthequalityofworkinglifeofabout5000
PsychologistsatQowl,aprivatefirmlinkedtotheUniversityofPortsmouthanalyzedthequalityofworkinglifeofabout5000
随机试题
房产税的计税依据有________、________。
糖尿病最严重的并发症是
对于1、2、3级评价项目,生态影响评价范围要以重要评价因子受影响的方向为扩展距离,一般为( )。
下列所给选项中,关于仲裁管辖的表达,正确的是()。
助理理财规划师只有明晰婚姻家庭( )因素,才能为客户量身定做财产规划。
下列各项中,表述正确的有()。
导游人员在讲解的时候要做到“自圆其说”。因此,导游人员对自己心里没有把握的问题,一时不能查实的问题,可以通过编撰以达到“自圆其说”。()
TheZhusuan,otherwiseknownastheChineseabacuswasofficiallylistedasanintangibleculturalheritageatthe8thAnnualUN
政治记者汤姆分析了十届美国总统的各种讲话和报告,发现其中有不少谎话。因此.汤姆推断:所有参加竞选美国总统的政治家都是不诚实的。以下哪项和汤姆的推断的意思是一样的?
Questions24-30:SurveyContentQuestionscanaskabout:opinionsandattitudesfactualcharac
最新回复
(
0
)