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
Nobody can be really free from the sound. Whether we live in the middle of a modern city or a faraway village, we are surrounded
Nobody can be really free from the sound. Whether we live in the middle of a modern city or a faraway village, we are surrounded
admin
2012-06-09
37
问题
Nobody can be really free from the sound. Whether we live in the middle of a modern city or a faraway village, we are surrounded by sound every day such as the sounds from television and radio, household appliances, and traffic. Sound makes up a part of our life.
In fact, most of us can not bear total silence. Sound gives us a sense of safety and brings us joy. Scientific tests have also proved that total silence is a very frightening experience for human beings. A recent report shows that people feel quite lonely without background sound while they are working. The background sound which doesn’t change too much may even help people to concentrate.
However, sometimes, sound is not helpful and joyful in people’s life. Normally, we hear these sounds at safe levels that do not affect our hearing. However, when we are exposed to harmful noise—the sounds that are too loud or loud sounds that last a long time, sensitive structures in our inner ear can be damaged, causing hearing loss.
Besides, unpleasant sounds, particularly sudden and uneven ones, may cause fear and anger. Noise is a source of stress, which can lead to tiredness, irritability and headaches. Noise can also raise blood pressure, putting strain on the heart. People living in homes exposed to high levels of road-traffic noise were more likely to report having hypertension, according to a study in Environmental Health. The researchers estimate the noise levels for the addresses of more than 24,000 Swedish. They found that people exposed to an average traffic-noise level above 64 decibels (slightly louder than a normal conversation) were 52% more likely than people exposed to 45 decibels of road noise to report having high blood pressure, a key risk factor for heart disease, after removing age, socioeconomic status, and other variables. Noise exposure could cause hypertension by persistently elevating the body’s level of stress hormones.
Now we know that noise is harmful to our health, but can we get used to the excessive noise? The answer is NO. If, after long exposure to excessive noise, we stop hearing it — because we have become deaf!
The author writes this passage to
选项
A、tell us the knowledge of sound.
B、compare sound with noise.
C、show the hazard of noise.
D、warn the noise damage.
答案
D
解析
纵观全文,文中首先说明声音对人们生活的积极作用,然后重点讲述了噪音给人们带来的危害,并在最后一段强调虽然声音息息相关,但我们不得不预防噪音给我们身体造成的危害,因此作者此文的目的是警示人们小心噪音伤害。选择D项。
转载请注明原文地址:https://kaotiyun.com/show/j5xd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
AmericanIndiansplayedacentralroleinthewarknownastheAmericanRevolution.Tothem,however,thedisputebetweentheco
AmericanIndiansplayedacentralroleinthewarknownastheAmericanRevolution.Tothem,however,thedisputebetweentheco
Thereisalotofargumentbetweenpeoplewhobelieveinthetruthofoldweatherrhymes(韵文)andpeoplewhoarereluctanttobe
An80-year-oldmanfromCincinnatiinAmericaismakinglegalhistorybysuingdoctorswhosavedhiswife.EdwardWinterhaswit
Howefficientisoursystemofcriminaltrial?Doesitreallydothebasicjobweaskofit—convictingtheguiltyandacquitting
Everyoneknowsthattaxationisnecessaryinamodernstate:【21】______it,itwouldnotbepossibletopaythesoldiersandpo
【61】TheChineseConstitutionstipulatesthatwomenenjoyequalpoliticalrightswithmenandtheyalsoenjoytheequalright
ReadthefollowingtextcarefullyandthentranslatetheunderlinedsegmentsintoChinese.Yourtranslationshouldbewritte
Ifthesunhasenoughpowertowarmandlightthewholeearth,itmusthaveenoughpowertodootherthings,too.【61】Canweuse
ReadthefollowingtextcarefullyandthentranslatetheunderlinedsegmentsintoChinese.Yourtranslationshouldbewritte
随机试题
有一根导线,每小时通过任一截面积的电量为450库仑,通过导体的电流是()毫安。
A.Aα类纤维B.Aγ类纤维C.B类纤维D.C类纤维支配骨骼肌的运动神经纤维属于
石棉肺的发病机制有以下学说,但最近被多数人认可的是
通过质量控制的动态分析能随时了解生产过程中的质量变化情况,预防出现废品。下列方法中,属于动态分析方法的是()
社区中居民的相互支持及互相帮助,可以满足其在情感和物质上的需要的功能是( )。
制度:管理
有研究者做了个实验,检验游戏对儿童自尊水平的影响,其中游戏是()。
[*]
UniversitiesintheUS Thereare【T1】__________________intheUnitedStates.Nearlyhalfofthe【T2】__________________inAmerica
A、Tochangeajob.B、Toturnthebossdown.C、Tostriketheiron.D、Toaskforaraise.D题目问男士建议女士做什么。女士说想要求老板加薪,但又怕老板拒绝。男士说女士干得
最新回复
(
0
)