首页
登录
职称英语
What is this passage talking about? [br] [originaltext] We’ve become alarm
What is this passage talking about? [br] [originaltext] We’ve become alarm
游客
2023-11-19
59
管理
问题
What is this passage talking about? [br]
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 basic 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 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. 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、Traffic on a busy street.
B、Jet plane taking off.
C、Sound that the average person can hear.
D、Sounds up to 80 decibels.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3200098.html
相关试题推荐
_______rankssecondamongleadingtourismnations.[br][originaltext] Thereh
WhatwouldhappentotheArgentineofficers?[originaltext]Around44military
Themuseumwasbuiltinmemoryofthose[br][originaltext] TheInternational
Themuseumwasbuiltinmemoryofthose[originaltext] TheInternationalRedCr
Accordingtothepassage,landladiesare______.[br]WhatisNOTmentionedasa
Whatisthenewsmainlyabout?[br][originaltext]AnIndonesianferrypacked
Whatisthenewsmainlyabout?[originaltext]AnIndonesianferrypackedwith
WhichofthefollowingisNOTmentionedinthefollowingnews?[originaltext]
WhohadtoleavetheGazaStripandtheWestBank?[originaltext]Israel’sar
Accordingtothetalk,theownerofabikehasto______.[br][originaltext]
随机试题
It’struethat"Asmallchangecanmakeabigdifference"inourlife.Abet
What’sthemainideaofthenewsitem?[originaltext](27)ThenewUSTradeRe
CreativeBookReportIdeasA)Areyouatalossforcreative
TodayI’dliketotalkaboutwhathelpspeoplesuccessfullyintegrateintoa
施工现场临时用电必须建立安全()档案。A.业务 B.水平 C.技术
在商业银行信用风险组合层面的区域风险识别中应关注()。A.主要客户所在行业的
如何激发学生的学习动机?
某城市中有220kV变电站,降压为110kV及10kV,220kV出线为4回,
在淤泥质海岸,波浪作用下产生的浮泥有()特性,会增加随潮进入港区和航道的泥沙数
安全保证计划是施工组织设计的重要组成部分,下列项目属于计划内容是()。A、工程
最新回复
(
0
)