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
2023-07-06
56
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/2812137.html
相关试题推荐
[originaltext]Throughouthistorymanhaschangedhisphysicalenvironmenti
[originaltext]Throughouthistorymanhaschangedhisphysicalenvironmenti
[originaltext]Throughouthistorymanhaschangedhisphysicalenvironmenti
[originaltext]Silenceisunnaturaltoman.Hebeginslifewithacryanden
[originaltext]Silenceisunnaturaltoman.Hebeginslifewithacryanden
[originaltext]M:Carol,didyoutakethecartothegaragetoday?W:Yes,Idid
[originaltext]M:Carol,didyoutakethecartothegaragetoday?W:Yes,Idid
[originaltext]W:Hi,Jack!Whatissointeresting?M:Hi,Jane.I’mthinkingab
[originaltext]W:Hi,Jack!Whatissointeresting?M:Hi,Jane.I’mthinkingab
[originaltext]W:So,whatdidyouthinkaboutthediscussionatlunch?Ididn’t
随机试题
[A]affect[B]consistency[C]contrary[D]contribute[E]decrease[F]domi
[originaltext]Automakersandtechcompaniesareworkinghardtoofferthef
ThemainthemeofEmilyDickinsonisthefollowingEXCEPT______.A、friendshipB、l
—Whendoyouthinktheworkerswillfinishbuildingthegarage?—Theyhavebeen
电网企业对可再生能源发电项目进行并网及运行安全检查应收取费用。()
某农药厂违规向外排放毒性超标的工业废水,导致甲村的饮用水被污染而无法饮用。该村村
关于焦虑与焦虑症两者关系的描述不正确的是()A.轻度焦虑对人有益,会激励人
在倾听患者的话语时,错误的做法是( )。A.全神贯注 B.集中精神 C.不
劳动法律关系的主要形态是( )。A.劳动行政法律关系 B.劳动合同关系
反映商业银行对贷款损失的弥补能力和对贷款风险的防范能力的关键风险指标是()。A
最新回复
(
0
)