首页
登录
职称英语
What is this passage talking about? [originaltext] (14)We’ve become alarmed
What is this passage talking about? [originaltext] (14)We’ve become alarmed
游客
2023-11-07
41
管理
问题
What is this passage talking about?
(14)We’ve become 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. Then we can take a look at our school environment and see if we can figure out some ways to protect hearing. (16) 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 by decibels. One decibel is the lowest sound the average person can hear. Sounds up to 80 decibels generally aren’t harmful. That’s noise like traffic on a busy street. But anything louder than 80 decibels may hurt your hearing. (15) Once you are up to 140 decibels, that’s like a jet plane taking off, then you might even feel pain in your ears. Those 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.
选项
A、Air pollution.
B、Noise damage.
C、Environment on campus.
D、Solutions for pollution.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3166457.html
相关试题推荐
Accordingtothenews,theFrenchBicycleraceisgoingtobeheld[originaltext
Whatisthenewsitemmainlyabout?[originaltext]IntheMidwest,floodwatc
WhendidthewomenwinacourtrulinginBritain?[br][originaltext]Police
WhendidthewomenwinacourtrulinginBritain?[originaltext]PoliceinSw
WhodiedlastMonday?[br][originaltext]Dignitariesfromaroundtheworld
WhodiedlastMonday?[originaltext]Dignitariesfromaroundtheworldhaveb
Whatevidencedidinvestigatorsfailtofind?[br][originaltext]Athree-mo
Whatevidencedidinvestigatorsfailtofind?[originaltext]Athree-monthpr
Whatisthepassagemainlyabout?[br][originaltext]Settlersoriginallyca
Whowerethefirstinsurancecontractsdesignedtoprotect?[br][originaltext]
随机试题
Theauthorcitestheexampleofthe16-year-oldAlbanianhigh-schooldrop-outto
Forthispart,youareallowed30minutestowriteacompositiononthetopicMy
为什么说以公有制为主体、多种所有制经济共同发展,是我国社会主义初级阶段的一项基本
左心房扩大的早期X线征象是()A.左前斜位左主支气管受压抬高 B.后前位左心缘
冰雪天气时,检查设备积雪、覆冰厚度情况,及时清除构架上形成的冰柱。
关于福费廷业务的特点,下列说法正确的有()。A:属于中期融资业务 B:适合于1
下列计量单位中,属于建筑施工单位产品人工时间定额的单位是( )。A.小时 B
(2017年真题)下列安全出口的检查结果中,符合现行国家消防技术标准的有(
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
不宜采用强夯法施工的是()。A.高饱和度的粉土 B.碎石土 C.杂填土 D
最新回复
(
0
)