首页
登录
职称英语
Although many of us may feel air-conditioners bring relief from hot, humid o
Although many of us may feel air-conditioners bring relief from hot, humid o
游客
2023-07-02
42
管理
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. [br] 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://tihaiku.com/zcyy/2801308.html
相关试题推荐
Mostpeoplewouldagreethat,althoughourageexceedsallpreviousagesin
Mostpeoplewouldagreethat,althoughourageexceedsallpreviousagesin
Mostpeoplewouldagreethat,althoughourageexceedsallpreviousagesin
Althoughthestigma(耻辱)onceassociatedwithmentalillnesshasgraduallygon
Althoughthestigma(耻辱)onceassociatedwithmentalillnesshasgraduallygon
AlthoughtheOlympicCharter,theofficialconstitutionoftheOlympicmovem
Althougheachbabyhasanindividualscheduleofdevelopment,generalpatter
Althougheachbabyhasanindividualscheduleofdevelopment,generalpatter
Althougheachbabyhasanindividualscheduleofdevelopment,generalpatter
Althougheachbabyhasanindividualscheduleofdevelopment,generalpatter
随机试题
AnewstudyfromtheUniversityofNewSouthWaleshasdiscoveredthatdurin
[originaltext]M:You’renotlookingverycheerful.What’sthematterwithyou?
A.四川B.河南C.甘肃D.吉林、辽宁、黑龙江E.广西、云南三七主产于
4岁患儿,3天前突发高热,体温39.5℃,伴寒战,述右侧膝上部疼痛,患肢屈曲,拒
四时不正之气乘虚侵入,致病较重者,称为A.阴邪 B.阳邪 C.正邪 D.虚
以下关于普通股融资的说法正确的是()。A:不必支付固定的股利 B:筹集资本具有
()是针对某一行业或某一种类的物品,按照自身货物的特点进行货物的组织、配送等物流
均衡价格是指一种商品需求量与供给量相等时的价格。如果市场价格高于均衡价格时,市场
()是感应电动机。A.绕线转子异步电动机 B.交流同步电动机 C.直流电
对于干硬性混凝土拌合物(坍落度小于10mm),其和易性指标采用( )。A.坍落
最新回复
(
0
)