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
2016-10-07
73
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/7vY7777K
0
大学英语四级
相关试题推荐
Mostpeoplewouldagreethat,althoughourageexceedsallpreviousagesinknowledge,therehasbeennocorrelativeincreasein
Mostpeoplewouldagreethat,althoughourageexceedsallpreviousagesinknowledge,therehasbeennocorrelativeincreasein
Mostpeoplewouldagreethat,althoughourageexceedsallpreviousagesinknowledge,therehasbeennocorrelativeincreasein
OliviaPedersenthoughttheNissanLeafparkedoutsideherfavoritelunchspotnearEmoryUniversity,mustbehers.Butshecoul
OliviaPedersenthoughttheNissanLeafparkedoutsideherfavoritelunchspotnearEmoryUniversity,mustbehers.Butshecoul
BullyingandChildrenA)Whatyoursonisdescribingisbullying,plainandsimple.Althoughitislateintheschoolyear,yous
BullyingandChildrenA)Whatyoursonisdescribingisbullying,plainandsimple.Althoughitislateintheschoolyear,yous
BullyingandChildrenA)Whatyoursonisdescribingisbullying,plainandsimple.Althoughitislateintheschoolyear,yous
BullyingandChildrenA)Whatyoursonisdescribingisbullying,plainandsimple.Althoughitislateintheschoolyear,yous
随机试题
26岁初产妇,妊娠40周,来院时规律宫缩22小时,已破膜。检查:宫底剑突下3指,胎心在脐下左下方140次/分。肛查宫口开全,胎头S+4。本例正确处理应是
女性,28岁,脐周隐痛伴腹泻一周,大便呈糊状,无黏液脓血,近半个月发热盗汗,钡剂灌肠示回盲部激惹征,为确诊应首先选哪项检查
关于溃疡性结肠炎的治疗下列哪项不正确
冠心病病人突感心悸、胸闷,血压为12/8kPa(90/60mmHg),心尖部第一心音强弱不等;心电图示心房率慢于心室率,二者无固定关系,QRS波增宽为0.12秒,可见心室夺获和室性融合波。诊断为
关于法官的违纪违法职业责任,下列说法中正确的是哪些选项?()
道路改扩建项目。拟对某一现有省道进行改扩建,其中拓宽路段长16km,新建路段长8km,新建、改建中型桥梁各1座,改造后全线为二级干线公路,设计车速80km/h,路基宽24m,采用沥青路面,改扩建工程需拆迁建筑物6200m2。该项目沿线两侧分布有大量农田,
因第三者对保险标的损害而造成的保险事故发生后,保险人未赔偿保险金之前,即使被保险人放弃对第三者请求赔偿的权利,保险人仍应承担赔偿保险金的责任。()
税务行政复议期间发生的下列情形中,可导致行政复议中止的有()。
蒸发冷却是指液体在蒸发成气体的过程中会吸热,从而降低周围的温度起到冷却的效果。蒸发冷却效应是指在目的或志趣相同的人们组成的社会团体中,团体的价值跟液体的整体温度类似,当价值较高的成员离开社团后,社团自身的平均价值会降低。根据上述定义,下列属于蒸发冷却效应的
有以下程序,程序中库函数islower(ch)用以判断ch中的字母是否为小写字母#include#includevoidfun(char*p){inti=0;while(p[i]){if(p[i]==’’&&islower
最新回复
(
0
)