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
2024-01-29
6
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. 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 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. But anything louder than 80 decibels, especially with continuous exposure, may 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、Moderate noise is harmless.
B、Sound above 80 decibels can hurt hearing.
C、Noise can make people feel stressed.
D、There is no noise on campus.
答案
B
解析
录音提到,任何高于80分贝的声音,尤其是持续暴露在此种声音之下,最终会对听力造成损害,B所述与此一致,故为正确答案。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3403626.html
相关试题推荐
[originaltext]Aroundtheworldmoreandmorepeoplearetakingpartindang
[originaltext]Aroundtheworldmoreandmorepeoplearetakingpartindang
[originaltext]Smokingcanbeharmfultoyourhealth.Butwhydopeoplesmok
[originaltext][16]TheOlympicGameswerefirstheldatOlympiainancient
[originaltext][16]TheOlympicGameswerefirstheldatOlympiainancient
[originaltext]M:I’msorryI’mlate,Rose.W:That’sallright,Vic.Myhousei
[originaltext]M:I’msorryI’mlate,Rose.W:That’sallright,Vic.Myhousei
[originaltext]M:I’msorryI’mlate,Rose.W:That’sallright,Vic.Myhousei
[originaltext]M:TheRepublicanPartyinAmericaisopposingstemcellresearch
[originaltext]HSBCsaysallitsonlinebankingservicesareoperatingatfu
随机试题
大学生利用假期当保姆已不再是新鲜事。一项调查显示,63%的被调查者赞成大学生当保
肠套叠最常见类型是A.空肠套入回肠 B.回肠套入回肠 C.回肠套入结肠 D
设计一张教学挂图,展示菜豆种子的结构。 (1)用示意图的形式展示你设计的挂图
李某,男,68岁,有冠心病史8年。今日突然心胸绞痛,胸中有窒息感,心慌,面色苍白
A.角质层B.透明层C.基底层D.毛囊E.皮下组织皮肤的结构中,易被药物吸收的部
社区健康教育的讲座或演讲一般时间为A:30分钟 B:45分钟 C:1小时
国内生产总值的表现形态不包括()。A.收入形态 B.价值形态 C.产品形态
期货公司首席风险官不履行职责或者利用职务之便牟取私利的,中国证监会及其派出机构可
下列房地产开发项目前期策划报告的内容中,属于产品定位内容的有()。A:总体规划建
根据合伙企业法律制度的规定,下列主体中,可以成为普通合伙人的是( )。A.某公
最新回复
(
0
)