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
69
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!
What can be inferred from the fourth paragraph?
选项
A、Sound level above 64 decibels is unbearable by human beings.
B、Noise is a key risk factor for heart disease.
C、Noise of 45 decibels is the level of a normal conversation.
D、Hypertension is another saying of high blood pressure.
答案
D
解析
由第四段第四句“People…high levels of road—traffic noise…hypertension…”可知,在道路交通噪音较大的房屋中居住的人患hypertension的可能性更大。由本段第六句“They found…above 64 decibels…having high blood pressure…”可知,身处平均噪音水平64分贝(交通噪音较大)以上的人群患high blood pressure的可能性比身处道路噪音45分贝中的人群高。由此可推知,hypertension和high blood pressure意思一样。故D项正确。根据第四段第六句“They found that people exposed to an average traffic—noise level above 64 decibels(slightly louder than a normal conversation)…”可知,64分贝的音量只是比正常谈话稍微高一点,A项提到64分贝是人类难以忍受的,不符合文意;根据该句中“…having high blood pressure,a key risk factor for heart disease…”可知,高血压才是心脏病的一个主要风险因素,故B项不对;该句当中只是用64分贝和45分贝对人的影响做对比,并没有明确表示两者哪一个是正常分贝,C项过于牵强,故正确答案为D项。
转载请注明原文地址:https://kaotiyun.com/show/3Uxd777K
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
Whethertheeyesare"thewindowsofthesoul"isdebatable;thattheyareintenselyimportantininterpersonalcommunicationis
Almostdaily,thegulfbetweeneducationandemploymentwidens.Careersofficerscomplainaboutasystemthatpresentsthemwith
Somepeopleliketosharearoomwithastranger,whileothersdislikeit.Writeanessaytoshowyouropinionaboutit.Youres
【B1】Whatistherelationbetweenthecodeandculturewhichcreatesit,andwhichittransmitstothenextgeneration?Linguist
【B1】Whatistherelationbetweenthecodeandculturewhichcreatesit,andwhichittransmitstothenextgeneration?Linguist
TheSpringFestivalisatraditionalfestivalinChina,andChinesehavebeenaccustomedtocelebratingitathome.Butnowmore
Whenitcomestogenderrolesinfamilies,itseemsthemorethingschange,themoretheystaythesame.Forthefirsttime,the
Thehumanbeinglongsforasenseofbeingaccomplished,ofbeingabletodothings,withhishand,withhismind,withhiswill
ReadthefollowingtextcarefullyandthentranslatetheunderlinedsegmentsintoChinese.Yourtranslationshouldbewritte
ReadthefollowingtextcarefullyandthentranslatetheunderlinedsegmentsintoChinese.Yourtranslationshouldbewritte
随机试题
【B1】________Nochildimitateseveryactionhesees.Sometimes,theexampletheparentwantshimtofollowisignoredwhileheta
强调式发问:
根据规定,禁止商品房预购人将购买的未竣工的预售商品房再转让。
地下工程施工中,当洞室围岩为I一Ⅱ类岩石时,可先以全断面进行顶拱部位开挖,然后对顶拱进行喷锚支护。在进行顶拱支护的同时,可进行下部开挖,最后再开挖中部,使断面成型。这种开挖法是( )。
投资基金的风险小于股票投资,但大于债券投资。()
甲股份有限公司(以下称为“甲公司”)系上市公司,主要经营电子设备、电子产品的生产销售,为增值税一般纳税人,适用的增值税税率为17%,适用的所得税税率为25%。除特别注明外,甲公司产品销售价格为不含增值税价格。(1)甲公司2010年1至11月份的利润表如下
紧急状态处置,是指公安机关为维护国家安全和社会治安秩序,对突发的重大暴力犯罪、重大治安事件和重大治安灾害事故依法采取的非常措施。
消费者剩余是消费者的()。
对于WindowsXP,以下哪种说法是错误的?______。
The2sisters______acointodecidewhowouldwashthedishes.
最新回复
(
0
)