首页
登录
职称英语
What is this passage talking about? [br] [originaltext] (14)We’ve become al
What is this passage talking about? [br] [originaltext] (14)We’ve become al
游客
2024-09-30
34
管理
问题
What is this passage talking about? [br]
(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、Bad health.
B、Excessive noise.
C、Horns taken to football games.
D、The busy traffic.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3781023.html
相关试题推荐
________peoplewerekilledintheIsraelandPalestineclashes.[originaltext]
Whatisthetopicofthenews?[originaltext]ThenewEPAstandardmeans345
Howmanycountriesattendedtheclose-doormeetingheldinLondon?[originaltext
Accordingtothenews,Francewasstronglycriticizedfor______.[originaltext]
Countrymusicisabout______.[originaltext]Citypeopleusuallythinkthey
Whyarethemaleelephantssentaway?[br][originaltext]Theelephantisth
Whyarethemaleelephantssentaway?[br][originaltext]Theelephantisth
Whyarethemaleelephantssentaway?[originaltext]Theelephantisthebigg
Whatistheconversationmainlyabout?[br][originaltext]W:HiTarry,Iwillb
Whatistheconversationmainlyabout?[originaltext]W:HiTarry,Iwillbegoin
随机试题
WhenlivinginEngland,peopleshouldbeawarethatEnglishpeopleare,bytempe
[originaltext]Interviewer:Mrs..Leech,canyoudescribesomeofthethingsyou
半刚性基层材料配合比设计时,可采用重型击实或振动击实成型试件。
对课程资源开发与利用表述错误的是( )。A.满足学生学习美术的基本条件 B.
依据《私募投资基金管理人登记和基金备案办法(试行)》的规定,私募基金管理人的高级
白头翁汤的功用是A.清热解毒,凉血止痢 B.燥湿运脾,行气和胃 C.清热燥湿
航摄比例尺S的计算公式为()。A.S=摄影机主距/相对航高 B.S=摄影机
今年“五一”前夕,当很多白领期待即将到来的端午小长假时,上海白领姚先生却开怀不起
计算期末普通年金现值的要素有()。
属于Ⅰb类抗心律失常药的是A.胺碘酮 B.奎尼丁 C.利多卡因 D.普罗帕
最新回复
(
0
)