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
2023-11-19
53
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/3200097.html
相关试题推荐
Thethreeworld’srichestindustrialcountriesare______.[br][originaltext]
Thethreeworld’srichestindustrialcountriesare______.[br][originaltext]
WhodidNOTattendtheconferenceoneducationalgames?[originaltext]Fors
WhichofthefollowingisNOTtrueforeachofthefivewinners?[originaltext]
HowmanyprovincesandterritoriesdoesCanadahave?[br][originaltext]M:Lind
HowmanyprovincesandterritoriesdoesCanadahave?[br][originaltext]M:Lind
HowmanyprovincesandterritoriesdoesCanadahave?[originaltext]M:Linda,you
WhatdidHelenrecentlypass?[br][originaltext]M:Hi,Helen.Howdidyourdri
WhatdidHelenrecentlypass?[originaltext]M:Hi,Helen.Howdidyourdrivingt
WhatdoesMarythinkissoincredibleandwonderful?[originaltext]M:Thinkabou
随机试题
Thesportofwrestlingtests______,strength,andstamina.A、agilityB、coordinati
Whatdoesthespeakerthinkofhermother?Hermotheristhe___________person
A.竹叶麦冬 B.丹皮芍药 C.黄芩黄柏 D.玄参丹参
以下关于现金预算与实际的差异分析说法错误的是()。A.总额差异的重要性小
A.脱水、低血钾甚至电解质紊乱 B.大汗淋漓甚至发生虚脱 C.精神抑郁症
某药在长期使用过程中,突然停药易引起严重高血压,该药是A.哌唑嗪 B.普萘洛尔
人在每一瞬间,将心理活动选择了某些对象而忽略了另一些对象。这一特点指的是注意的(
2005年全国专利审查与专利代理业务研讨会宣布,预计在“十一五”期间,我国专利申
心理咨询师的谈话表明其( )A、正确掌握相关技术 B、正确掌握相关原
按照规划时间的长短,企业的人力资源规划可以分为()。A.总体计划 B.具体规
最新回复
(
0
)