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
2011-04-05
52
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/CUxd777K
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
Thedifferenceintimebetweenzonesis______.
【B1】Whiletherearealmostasmanydefinitionsofhistoryastherearehistorians,modernpracticemostcloselyconformstoone
Societywasfascinatedbyscienceandthingsscientificinthenineteenthcentury.Greatbreakthroughsinengineering,theuseo
Themainproblempeoplemayencountertodayarisesfromthefactthat______.
PeopleintheUnitedStatesinthenineteenthcenturywere【C1】______bythe【C2】______thatunprecedentedchangeinthenatio
Itwasin1812,inavillageinFrance.Alittleboytrippedandfellwithpointedtoolsinhishand.Inthataccidenthebecame
【61】TheChineseConstitutionstipulatesthatwomenenjoyequalpoliticalrightswithmenandtheyalsoenjoytheequalright
Themorewomenandminoritiesmaketheirwayintotheranksofmanagement,themoretheyseemtowanttotalkaboutthingsforme
Thehumanbeinglongsforasenseofbeingaccomplished,ofbeingabletodothings,withhishand,withhismind,withhiswill
Thehumanbeinglongsforasenseofbeingaccomplished,ofbeingabletodothings,withhishand,withhismind,withhiswill
随机试题
电影作品:《乱世佳人》
患者男性,28岁,因腹痛、头晕、乏力、柏油便。2次就诊,并收入院。体检T36.8℃,BP120/75mmHg,神志清,贫血貌,两黼呼吸音清。心率80次/分,律齐,无杂音。实验室检查WBC4.2×109/L、血红蛋白75g/L,粪便镜检钩虫卵(+)/高
A.硝酸甘油B.普萘洛尔C.双嘧达莫D.硝苯地平E.维拉帕米易产生耐受性的抗心绞痛药
下列对商业银行声誉风险管理的表述,正确的有()。
廷推
在客户机上运行nslookup查询某服务器名称时能解析出IP地址,查询IP地址时却不能解析出服务器名称,解决这一问题的方法是____。
Thewayshechangeshermindthreeorfourtimesadayisutterlybewildering.
Therearequiteafewpeoplewhoarewillingtoprostitutetheirintelligenceforamessofpottage.
Itisgenerallybelievedthatthegreatestdamageofoldageisthelossofmentalfaculties.Withtheneardoublingoflifeexp
Whenweworryaboutwhomightbespyingonourprivatelives,weusuallythinkabouttheFederalagents.Buttheprivatesector
最新回复
(
0
)