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
A、Exposure to excessive noise. B、Lack of rest. C、Unpreventable accident. D、Intense work pressure. A录音提到引起可预防性失聪的主要原因(leading cau
A、Exposure to excessive noise. B、Lack of rest. C、Unpreventable accident. D、Intense work pressure. A录音提到引起可预防性失聪的主要原因(leading cau
admin
2017-01-16
37
问题
I’m glad to see so many of you here. We’ve become really alarmed over the health center by the number of students who are experiencing hearing loss. First, I want to go over some basics about hearing, and then we can take a look at our school environment and see if we can figure out some ways to protect hearing. The leading cause of preventable hearing loss is excessive noise. Too much moderate noise for a long time, or some types of intense noise for even a short time can damage hearing. Loudness is measured in units called decibels. One decibel is the lowest sound that the average person can hear. Sounds up to 80 decibels generally aren’t harmful, that’s like traffic on a busy street. But anything louder than 80 decibels, especially with continuous exposure, may eventually hurt your hearing. Once you’re up to around 140 decibels, that’s like a jet plane taking off, then you might even feel pain in your ears. And pains are sure sign that your hearing is at risk. Even one exposure to a really loud noise at close range can cause hearing loss. So what you need to do is limit your exposure to harmful levels. Now, take a look at the decibel level of some common campus sounds. Notice how loud those horns are that people take to football games. They are really dangerous if blown right behind you. Now, let’s try to generate a list of damaging noises.
16 What is the main cause of hearing loss?
17 What does the speaker say about harmful noise?
18 What does the speaker suggest to protect hearing?
19 What will the speaker probably do next?
选项
A、Exposure to excessive noise.
B、Lack of rest.
C、Unpreventable accident.
D、Intense work pressure.
答案
A
解析
录音提到引起可预防性失聪的主要原因(leading cause)是过度的噪音(excessive noise),A复现了录音原词,为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/f9i7777K
0
大学英语四级
相关试题推荐
A、Theyonlyreceivemoneyfrombusinesses.B、Theyofferpeoplenewsandentertainment.C、Theyarerunbythegovernment.D、They
DearDiary,IHateYouReflectionsonjournalsinanageofovershare.A)Isuspectthatmanypeoplewhodon
Timeisrunningoutforgovernmentstooverhaulregulationofglobalbanksthathavebecomebiggerandmorepowerfulsincethes
Facebook’sSystemofDisablingFakeAccountsA)AliciaIstanbulwokeuponerecentWednesdaytofindherselflockedoutoftheFa
ExerciseIsAllYouGetattheGymA)Whenyougotothegym,doyouwashyourhandsbeforeandafterusingtheequipment?Bring
GratefulPeopleAreHappierandHealthierA)Itturnsoutthatgivingthanksisgoodforyourhealth.Agrowingbodyofresearch
Whenchildrenhitpuberty(青春期),theirabilitytolearnasecondlanguagedrops.Theyfindithardertolearntheirwayarounda
A、Inahospital.B、Atabusstation.C、Inahotel.D、Inanoffice.C生活交际类。场景推断题。女士说这是客房服务,并问男士需要什么帮助;男士说自己的房间没有纸巾了,想让女士拿些过来。由此可见
Accordingtoahandfulofstudies,anamenotonlyrevealscluesaboutaperson’sclass,educationandethnicorigin,itcanalso
中国的现代化建设必须从中国的实际出发。无论是革命还是建设,都要注意学习国外经验。但是照搬照抄别国经验、别国模式,我们不能取得成功。中国的事情要按中国的情况来办,要依靠中国人自己的力量来办。无论过去、现在和将来,独立自主,自力更生都是我们的立足点。任何国家不
随机试题
A.1:1B.2:1C.3:1D.5:1E.7:1当归补血汤中黄芪与当归配伍用量的比例是
患者,男,17岁。反复鼻出血1年。CT示翼腭窝软组织肿块,压迫上颌窦后壁弯曲前移,明显强化。诊断为
处方中常见外文缩写的含义叙述正确的有
下列情况中属于职务发明创造的是()。
应用动态控制原理进行建设工程项目投资控制时,相对于工程合同价而言,投资的计划值有()。
只要能够进入账务系统的操作员都有权进行账簿查询和对账操作。()
利用证券交易所的交易系统,通过向投资者在价格申购区间内的询价过程,从而确定发行价格并向投资者发行新股的发行方式是网上定价市值配售。()
城市不仅是一个国家或者地区的政治、经济、文化、科技和教育中心,且已经成为经济增长的强大引擎。美国的纽约、芝加哥和洛杉矶三个城市群,日本的东京、阪神和名古屋三大城市群,以及中国的长三角、珠三角和环渤海三大城市群等等对本国经济的贡献率都在一半以上。______
Windows98虽然只支持单处理器结构的PC机,但它通过提供虚拟机、进程和线程等机制,能很好地支持多道程序在PC机中的运行。下面有关Windows98处理器管理的叙述中,正确的是
TheInternationalLaborOrganizationhasstudiedreportsonworkers’privacyinnineteenindustrialnations.Thestudyshowstha
最新回复
(
0
)