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、To plan ways to prevent hearing damage. B、To inform them about contagious ear infections. C、To explain part of the physical ex
A、To plan ways to prevent hearing damage. B、To inform them about contagious ear infections. C、To explain part of the physical ex
admin
2010-05-26
58
问题
I am glad to see so many of you here. We’ve become really alarmed over at the health center by the number of students we are seeing, who are experiencing heating loss. First I want to go over some basics about hearing, 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 heating 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 noise like traffic on a busy street. But anything louder than 80 decibels, esp. 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. If you pass along this hand-out, we can 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 fight behind you. Now, let’ s try to generate a list of damaging noises.
选项
A、To plan ways to prevent hearing damage.
B、To inform them about contagious ear infections.
C、To explain part of the physical exam entering students must have.
D、To provide background information for their course work.
答案
A
解析
主旨题。关键词是...we can take a look at our school environment and see if we can figure out some ways to protect hearing.其中ways to protect hearing与A项中ways to prevent hearing damage近义。
转载请注明原文地址:https://kaotiyun.com/show/c8V7777K
0
大学英语四级
相关试题推荐
A、Theyhavebeenworkingatthetelescopefortwodays.B、Theycan’tfindthemicroscope.C、They’vebeenworkinginthelaborato
A、Theyhaveallkindsofroomsyoumaylookfor.B、They,likeresorthotels,areusuallyonthecoast.C、Theyhavespaciouspark
Scientistsusedtothinkthatmenaredifferentfromanimalsbecausetheycanthinkandlearn.Theynowknowhowanimalscanl
Educationisanareaofsociallifeinwhichinformationtechnologyischangingthewaywecommunicate.Today’scollegestudents
StudyinginSydney,Australia—anOverviewforInternationalStudentsAustraliahasbeenapopularchoiceforthousandsofi
Thehistoryofmodernwaterpollutiongoes【C1】______toFebruary20,1931,whenMrs.Murphy【C2】______overherbackyardfence
A、Heisunabletoattendherclass.B、Hewantstodeliversomethingtoheroffice.C、Hewantstohandinalateassignment.D、He
A、Neitherofherparentslikedit.B、Bothherparentslikedit.C、Oneofthemlikedit,buttheotherdidn’t.D、Themotherdidn’
A、Hismotherwantshimtodohishomework.B、Hehastofinishhishomework.C、Heistooexcitedtosleep.D、Hedoesn’tknowiti
WhyistheSouthPolecoldthantheNorthPole?【M1】______Bothpolarregionsoftheeartharecold,pri
随机试题
温经汤的君药是()(2002年第150题)
下列表述正确的有:()
新生儿窒息复苏的步骤,正确的是()
患者,男性,40岁,上腹痛、嗳气、反酸3个月,纤维胃镜诊断为胃溃疡。该患者宜选用的药物是
独活寄生汤的功效为
在正常使用情况下,电气管线、给排水管道、设备安装和装修工程的最低保修期限为( )年。
投资者购买股票最主要的目的是获得资产的保值,免受通货膨胀风险。()
当建筑物发生火灾时,受困人员为避免吸入大量烟尘造成窒息,应采取的正确逃生方法是()。
罪刑法定原则的基本内容包括()。
弗洛伊德认为侵犯是_____________。
最新回复
(
0
)