首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、Moderate noise is harmless. B、Sound above 80 decibels can hurt hearing. C、Noise can make people feel stressed. D、There is no n
A、Moderate noise is harmless. B、Sound above 80 decibels can hurt hearing. C、Noise can make people feel stressed. D、There is no n
admin
2018-09-15
27
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://kaotiyun.com/show/mk47777K
0
大学英语四级
相关试题推荐
A、Theytendtostaywithinshoutingorrunningdistanceoftheirparents.B、Theyshouldbeawareofthepotentialrisksinthep
A、Corn.B、Soybean.C、Oat.D、Rye.A短文结尾处提到,“事实上,大豆是继玉米之后美国农民种植的第二大最有价值的农作物。”可见最有价值的农作物是玉米,答案是A。答题方法与上题一样。对于文中语义强调的内容要有所辨别,最后才能按听到
A、Twomechanicalpilotswilldothejob.B、Thegiantjetwillcrash.C、Thegiantjetwillbeforcedtoland.D、Theenginesofth
A、Theywilllookmoreandmorealikeastimegoeson.B、Theywillbecomeincreasinglydependentoneachother.C、Theymightnot
A、Shelivesfarfromcampus.B、Shewantstohavearoommate.C、Shecan’taffordtopaytherent.D、Shehasnoplacetoparkher
A、Thefamilyandtheschool.B、TheadultsandthemassmediaC、Thesocietyandtheyoungpeople.D、Theyoungpeoplethemselves.
A、Yourproblemmaynotbeunderstoodcorrectly.B、Youdon’tknowifyouarecomplainingattherighttime.C、Yourcomplaintmay
A、Activitiesduringclassintervals.B、Hisperformanceinclasses.C、Theheavyburdenofhomework.D、Whathelearnedinclasses.
Officialhealthadvicethatsaidhouseholdchoreshelpkeepyouactivehasbeenprovedwrongbytheresearch,whichshowsthatt
A、Theyarebemoredifficulttoquitforsmokers.B、Theyarenotassafeastraditionalcigarettes.C、Theirmarkethasgreatpot
随机试题
痰湿蕴肺证,咳嗽何时加重
下列各项,不属于妇科病因生活因素的是
药物变态反应的临床表现分为
屈赞与曲玲协议离婚并约定婚生子屈曲由屈赞抚养,另口头约定曲玲按其能力给付抚养费并可随时探望屈曲。对此,下列哪些选项是正确的?(2016年)
下列财产中,只能属于国家所有权客体的是()。
2004年10月29日,中国人民银行决定放开人民币存款利率的(),允许金融机构()存款利率。
下列对外来原始凭证错误更正的做法中,不违背《会计法》的是()。
当你觉得日子_________时,应设法改善工作方法或尝试新的工作,你也可以主动要求多承担一些责任,或者自己去充电。总之,要对自己的状态进行_________,发现工作中的乐趣。填入划横线部分最恰当的一项是:
我国首次实现月球软着陆和月面巡视勘察的探测器是()。
软件规划阶段实际上指的是______。A)需求获取和定义阶段B)数据获取和定义阶段C)测试用例设计规划阶段D)产品实施规划
最新回复
(
0
)