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
2024-02-01
67
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、Exposure to excessive noise.
B、Lack of rest.
C、Unpreventable accident.
D、Intense work pressure.
答案
A
解析
录音提到引起可预防性失聪的主要原因(leading cause)是过度的噪音(excessive noise),A复现了录音原词,为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3412652.html
相关试题推荐
[originaltext](16)Americansgetsomeoftheirnewsandentertainmentfrom
[originaltext]TraditionalAmericansummercampsofferyoungpeopleachance
[originaltext]TraditionalAmericansummercampsofferyoungpeopleachance
[originaltext]Readingisapermanenttopicforthosehighlycivilizedcount
[originaltext]Readingisapermanenttopicforthosehighlycivilizedcount
[originaltext]M:Howshouldwecelebratetheanniversaryofthefoundingofour
[originaltext]M:Howshouldwecelebratetheanniversaryofthefoundingofour
[originaltext]W:Hi!Ihaven’tseenyouthesedays.Howiseverythinggoing?M:
[originaltext]W:Hi!Ihaven’tseenyouthesedays.Howiseverythinggoing?M:
[originaltext]W:MissLeetelephoned.Sheaskedifyouwouldbeabletomeethe
随机试题
Let’sbethesetofallpositiveintegershavingatmost4digitsandsuchthat
我国期货市场的监管机构是()。A、中国期货业协会B、中国期货交易委员会C、中国期货交易所联合委员会D、中国证监会D本题考查中国证监会的监管职能
Musicwhichis【B1】______isindividualandpersonal.Thatistosay,itcanb
Forthoseanxiousaboutcommittingtoamastersdegree,thereisthepost-b
伯奈斯公共关系思想的一个重要组成部分是“凡宣传皆好事”。
通过物业资产管理实现的目标是使这些物业在所处的市场内实现()的目标。A:价值最大
按相关的方向,相关方向可以分为()。A.完全相关 B.不完全相关
(2011年真题)燃气管道试验采用肥皂水对管道接口进行检查的试验是()。A.气
男,18岁,高三学生。既往学习成绩一贯优良,品德良好。据父母反映该生近半年来,可
HLA–I类抗原不在下列哪一种细胞表面表达A、淋巴细胞 B、成熟红细胞 C、
最新回复
(
0
)