首页
登录
职称英语
What is this passage talking about? [originaltext] We’ve become alarmed ove
What is this passage talking about? [originaltext] We’ve become alarmed ove
游客
2024-10-24
31
管理
问题
What is this passage talking about?
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、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/3814659.html
相关试题推荐
Whatisthefocusoftheprogram?[originaltext]TheHousevotedThursdayto
WhatisBush’sreactiontowardsUStroopwithdrals?[br][originaltext]Pr
WhatisBush’sreactiontowardsUStroopwithdrals?[originaltext]Presiden
Hildaisatthebicycleshop______.[br][originaltext]W:Hi,Steven.M:Oh,h
Hildaisatthebicycleshop______.[originaltext]W:Hi,Steven.M:Oh,hi,Hil
WhatdidtheprotestorsdotosupportAlfredoReinado?[br][originaltext]
WhatdidtheprotestorsdotosupportAlfredoReinado?[originaltext]Hundre
Whatdoesthespeakersayabouttheocean’slevelofsaltiness?[originaltext]
Whatistheprobablerelationshipbetweenthemanandthewoman?[originaltext]M
Japan’sdemandforimportslastmonth[br][originaltext]Japan’stradesur
随机试题
Incomputerprogramming,thismodelis______toanyoftheotherswehaveeverha
她总是觉得受人监视而心神不宁。(beobsessedwith)Shewasobsessedwiththefeelingthatshewas
Theparty’sreducedvoteswere______oflackofsupportforitspolicies.A、indic
[originaltext][12]Intoday’spersonalitystakes,nothingismorehighlyvalued
[originaltext]Althoughwearetoldwhenyoungthathonestyisthebestpoli
某企业2006年年初未分配利润贷方余额为30000元,本年实现净利润500000
透视检查的基础是A.穿透性 B.影像效应 C.荧光效应 D.感光效应 E
α-氧化铝∶刚玉A.青瓜∶葫芦 B.左迁∶降官 C.蜀∶汉 D.公孙树∶白
增生性龈炎多发生于A.儿童 B.青少年 C.老年人 D.中年人 E.新生
2018年齐某和赵某进入甲公司工作,主要从事室外装潢工作,赵某的工资为2200元
最新回复
(
0
)