首页
登录
职称英语
[originaltext] I’m glad to see so many of you here. We’ve become really alar
[originaltext] I’m glad to see so many of you here. We’ve become really alar
游客
2023-07-02
33
管理
问题
I’m glad to see so many of you here. We’ve become really 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, and 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’preyentable 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 in units called decibels. One decibel is the lowest sound that the average person can hear. Sounds up to 80 decibels generally aren’t harmful, that’s like traffic on a busy street.[17]But anything louder than 80 decibels, especially with continuous exposure, many eventually hurt your hearing. Once you’re up to around 140 decibels, that’s like a jet plane taking off, then you might even feel pain in your ears. And pains are sure sign that your hearing is 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. Now, 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. Now, let’s try to generate a list of damaging noises.
16. What is the main cause of hearing loss?
17. What does the speaker say about harmful noise?
18. What does the speaker suggest to protect hearing?
19. What will the speaker probably do next?
选项
A、Measure damaging noises on campus.
B、Make a list of campus noises.
C、Figure out how to fight against noise.
D、Explain the concept of noise.
答案
B
解析
在录音的最后,说话者提到“让我们列出一个有害噪音的清单吧”,且结合之前提到的校园噪音可知,此处是指列出校园内的噪音清单,故B为答案。
转载请注明原文地址:https://tihaiku.com/zcyy/2800808.html
相关试题推荐
[originaltext]AccordingtonewresearchbyBritishscientists,teenswhodo
[originaltext]AccordingtonewresearchbyBritishscientists,teenswhodo
[originaltext]Singaporehastopped131citiesgloballytobecometheworld’
[originaltext]Somekindsofmentalskillsnaturallydecreaseaspeopleget
[originaltext]Somekindsofmentalskillsnaturallydecreaseaspeopleget
[originaltext]M:Ouch,howcanthesandbesohotwhenthewater’sstillcold?
[originaltext]M:Ouch,howcanthesandbesohotwhenthewater’sstillcold?
[originaltext]M:ThatisitIknowthatitissmallerthanyouwanted,butiti
[originaltext]W:Excuseme,wherecanIfindtheseriesHairyPotter?Ihavebe
[originaltext]W:Excuseme,wherecanIfindtheseriesHairyPotter?Ihavebe
随机试题
天麻钩藤饮的功用是A.祛风化痰,定搐止痉,补益肝肾 B.镇肝息风,滋阴潜阳,补
水分子的跨膜转运A.单纯扩散 B.易化扩散 C.出胞作用 D.原发性主动转
以下说法不正确的是()A.魏晋南北朝分裂的三百年是我国民族大融合的重要时期
某无吊车单跨单层砌体仓库的无壁柱山墙,如下图所示,横墙承重,房屋山墙两侧均有外纵
(2019年真题)某社会工作服务机构为轻度认知障碍的老人开设预防脑退化小组,目的
KPI作为绩效指标与考核标准的结合体,它必须具备的特征是()。A.定性化.结果
下列风险中,属于承包商风险的是()。A:基础设施落后B:恶劣的现场条件C:工
流水施工中最常见的施工方式是()。A.非节奏流水施工 B.有节奏流水施工
评标程序中,下列属于初步审查形式评审的是( )。A.申请人名称与营业执照一致
心肌的异长调节是改变何种因素来调节心脏泵血功能的A.横桥ATP酶活性 B.横桥
最新回复
(
0
)