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
2024-02-07
44
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、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://tihaiku.com/zcyy/3428403.html
相关试题推荐
[originaltext]TheworldwideorganizationoftheRedCrossstemsfromtheid
[originaltext]TheworldwideorganizationoftheRedCrossstemsfromtheid
[originaltext]TheworldwideorganizationoftheRedCrossstemsfromtheid
[originaltext]Whenitcomestofindingajob,whoyouknowisasimportant
[originaltext]Whenitcomestofindingajob,whoyouknowisasimportant
[originaltext]Whatcanparentsofteenagersdotopreparetheirkidsforth
[originaltext]Whatcanparentsofteenagersdotopreparetheirkidsforth
[originaltext]Whatcanparentsofteenagersdotopreparetheirkidsforth
[originaltext]M:So,Susan,doyouhaveanythingplannedforthisSaturday?W:
[originaltext]M:Goodmorning,Mrs.Dudley.IamaschoolpaperreporterandI
随机试题
Whatisthepurposeofthismessage?[br][originaltext]Hello,Samantha,thisi
Thedevelopmentofwritingwasoneofthegreathumaninventions.Itisdif
[originaltext]AmericanvisitorstoEastAsiaareoftensurprisedandpuzzledby
[originaltext]InBritainandothercountries,youngpeoplesometimestakea
班级授课制最初是由夸美纽斯创立并在理论上进行说明的。()
关于组合式空调机组的箱体变形率,正确的表述是()。A.试验条件下,机组箱体变
K线图中的阳线通常用( )来表示。A.黑色实体 B.白色实体 C.绿色实体
治疗胃痛脾胃虚寒证,应首选A.小建中汤 B.理中丸 C.附子理中丸
下列药物中哪一味药具有补气生津的功效A.黄芪 B.白术 C.白扁豆 D.太
下列疾病中,禁做直肠指检的是A.肛瘘 B.肛裂 C.直肠肛管周围脓肿 D.
最新回复
(
0
)