首页
登录
职称英语
What is this passage talking about? [originaltext] We’ve become really alar
What is this passage talking about? [originaltext] We’ve become really alar
游客
2023-11-17
84
管理
问题
What is this passage talking about?
We’ve become really alarmed over the health center by the number of students we are seeing, who are experiencing hearing loss. First, I want to go over some basics about hearing. 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 8O decibels generally aren’t harmful. That’s noise like traffic on a busy street. But any- thing louder than 80 decibels may eventually hurt your hearing. Once sounds are up to around 140 decibels, that’s like a jet plane taking off, then you might feel pain in your ears. And pains are sure sign that your hearing’s 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. If you pass along this handout, we can 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.
选项
A、Air pollution.
B、Noise damage.
C、Environment in campus.
D、Solutions for pollution.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3196375.html
相关试题推荐
Whatcanweinferfromthisnewsitem?[originaltext]TheNewYorkPhilharmo
Whatisafrankfurter?[originaltext]Mostpeopleknowwhatahotdogis.It’s
Whatistheconversationmainlyabout?[br][originaltext]W:Dr.Smith?Thisis
Whatistheconversationmainlyabout?[br][originaltext]W:Dr.Smith?Thisis
TheJapanesebullettrains______.[br][originaltext]Foryearsnow,the
TheJapanesebullettrains______.[originaltext]Foryearsnow,theworld’
TherelationshipbetweenEuropeandIndiaisbasedon______.[originaltext]
WhathappenedtotheIraqarmygeneralinBaghdad?[originaltext]AnIraqar
WhathappenedtotheDutchairlinelastweek?[originaltext]Itemergedthat
MostoftheOlympicsceremoniesareto[br][originaltext]TheOlympicGame
随机试题
Fromhairspraystohairpieces,fromreducingdietstotwenty-four-hourfitne
______withthesizeofthewholeearth,thehighestmountaindoesnotseemhigh
[originaltext](30)Womenhinderthemselvesonthejobbyfrequentlyunderra
Whydidthepottersdiscussedinthepassagechangethekindofpotterytheyma
社区康复护理原则重点是训练患者达到A.自我护理 B.协同护理 C.专业水平护
1.现实生活中,有的员工认为,只要自己不犯错误,不违背纪律,就能够适应工作要求。
建筑物的组成构件中,屋顶所起到的作用是()。A.采光、通风和观望 B.供
简述现代企业人力资源管理各个历史发展阶段的特点。
关于牙骨质,错误的是A.组织学结构与密质骨相似 B.牙骨质细胞有许多细长的胞浆
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
最新回复
(
0
)