首页
登录
职称英语
[originaltext] I’m glad to see so many of you here. We’ve become really alar
[originaltext] I’m glad to see so many of you here. We’ve become really alar
游客
2024-01-30
30
管理
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、Do medical checkup regularly.
B、Avoid making noise.
C、Limit exposure to harmful noise.
D、Live in the place without noises.
答案
C
解析
录音提到,对于噪音,我们需要做的就是限制自己暴露在达到有害程度的噪音下(limit your exposure to harmful levels),C所说与此一致,故为答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3407605.html
相关试题推荐
[originaltext]Sinceaunionrepresentativevisitedourcompanytoinformus
[originaltext]Sinceaunionrepresentativevisitedourcompanytoinformus
[originaltext]Whenpeoplecareforanelderlyrelative,theyoftendonotu
[originaltext](16)Therearemanycommonlyheldbeliefsabouteyeglassesan
[originaltext](23)AnewbookbytwoprofessorsatPennsylvaniaStateUniver
[originaltext](23)AnewbookbytwoprofessorsatPennsylvaniaStateUniver
[originaltext](23)AnewbookbytwoprofessorsatPennsylvaniaStateUniver
[originaltext]Fromthebeginningofhumanhistory,(21)peoplehaveusedoil
[originaltext]Fromthebeginningofhumanhistory,(21)peoplehaveusedoil
[originaltext]Asmoreandmorepeoplelosetheirjobs,nowisperhapstheti
随机试题
MemoTo:Peter,DeputyEditorFrom:DanielThoma
Doyoumind___________________(推迟这次会议到本季度末)?postponingsuchaconferencetot
Humble______itmaybe,there’snoplacelikehome,______hemaygo.A、like;wh
关于职位分析的作用,说法错误的是( )A.有助于评价职位在组织中的相对价值,但
库泊(Cooper)等人的“心理旋转”实验说明了表象的哪个特征?()A.直观
某软件项目的《需求规格说明书》第一次正式发布时,版本号为V1.0,此后,由于发现
某混凝土强度等级为C25,其所用细骨料中含泥量宜小于()。A.1% B.
由杨丽萍编导并领衔主演的大型原生态歌舞集《云南映象》全球公演计划启动。该歌舞集海
保险是一种()的行为。 A.自助 B.他助 C.自助与他助相结合
能够消除日常价格运动中偶然因素引起的不规则性的图形是()。A:K线圈 B:
最新回复
(
0
)