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
2016-04-30
71
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 37℃, 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/Qae7777K
0
大学英语四级
相关试题推荐
Ithasbeensaidthateveryonelivesbysellingsomething.Inthelightofthisstatement,teacherslivebyselling【C1】______,p
Ithasbeensaidthateveryonelivesbysellingsomething.Inthelightofthisstatement,teacherslivebyselling【C1】______,p
Ithasbeensaidthateveryonelivesbysellingsomething.Inthelightofthisstatement,teacherslivebyselling【C1】______,p
WhenRobertoFelizcametotheUSAfromtheDominicanRepublic,heknewonlyafewwordsofEnglish.Educationsoonbecameanig
Theconceptofculturehasbeendefinedmanytimes,andalthoughnodefinitionhasachieveduniversalacceptance,mostofthede
A、Lookingsidewaystoseehowfastyourneighboreats.B、Eatingfromtheoutsidetowardthemiddle.C、Swallowingthepiewithwa
A、Lookforamoreexpensivehotel.B、Gotoanotherhotelbybus.C、Trytofindaquietplace.D、Takeawalkaroundthecity.C男士
A、Itisdifficulttohavefriendshipintheworkplace.B、Itisdifficulttohavefriendlyenvironmentintheorganizations.C、Th
WhoKilledtheSeaLions?A)Sittingintheturbulent(汹涌的)watersbelowtheBonnevilleDamontheColumbiaRiver,eastofPortland
WhoKilledtheSeaLions?A)Sittingintheturbulent(汹涌的)watersbelowtheBonnevilleDamontheColumbiaRiver,eastofPortland
随机试题
A.利多卡因B.肾上腺素C.沙丁胺醇D.氯霉素E.阿糖胞苷在pH6.9时最稳定,水溶液经稳定性预测t0.9约为11个月,常制成注射粉针剂使用的是
A.补肾强身片B.杞菊地黄丸C.金芪降糖片D.人参健脾片E.参岑白术丸治疗消渴时,属肾阴亏虚者,宜选用的中成药是()。
砖的强度等级一般分为()①MU10;②MU15;③MU20;④MU25;⑤MU30;⑥MU35;⑦MU40;⑧MU45;⑨MU50
()的考评方法适用于激发员工表现,开发其技能,但不能在员工之间进行比较。
党的公安政策指明了公安机关及其人民警察从事工作的基本方向、基本要求和基本做法。()
以下哪个选项中的作品全部出自美国作家之手?
A.丝状乳头B.菌状乳头C.轮廓乳头D.叶状乳头E.味蕾体积最大,数目最少,排列在界沟前方的是()。
《大清律例》颁行后,统治者规定条例的修订年限为()。
根据《中国人民政治协商会议共同纲领》的规定,全国人民代表大会闭会期间,()为行使国家政权的最高机关。
A、 B、 C、 D、 D
最新回复
(
0
)