首页
登录
职称英语
After going over some basic knowledge about hearing, the teacher will lead the s
After going over some basic knowledge about hearing, the teacher will lead the s
游客
2023-11-02
55
管理
问题
After going over some basic knowledge about hearing, the teacher will lead the students to______. [br]
I’m glad to see so many of you here. We’ve become really alarmed over the health center by the number of students we are seeing, who are experiencing hearing loss.(7)First, I want to go over some basic knowledge about hearing. Then we can take a look at our school environment and see if we can figure out some ways to protect hearing.(8)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.(9)Sounds up to 80 decibels generally aren’t harmful. That’s noise like traffic on a busy street. But anything louder than 80 decibels, especially with continuous exposure, may eventually hurt your hearing.(10)Once you are 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’s at risk. Even one exposure to a really loud noise at close range can cause hearing loss. So what you need to do is to limit your exposure to harmful levels. If you pass along this handout, 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 right behind you. Now, let’s try to generate a list of damaging noises.
选项
A、140 decibels
B、100 decibels
C、80 decibels
D、160 decibels
答案
C
解析
语义理解题。由句(9)可知,80分贝以下的声音不会对听觉造成伤害。所以答案为C。
转载请注明原文地址:http://tihaiku.com/zcyy/3151584.html
相关试题推荐
Alreadytheclassis______aboutwhoournewteacherwillbe.A、foreseeingB、specu
Teachersinthisschoolwereencouragedtousedramaasa(n)______oflearning.A、
Theteachertoldthestudentstostayintheclassroomandtheydid______.A、abso
Acutehearinghelpsmostanimalssensetheapproachofthunderstormslongbefore
Thefollowingareallcorrectresponsesto"Whotoldthenewstotheteacher?"E
Hepretendedtounderstandthefull______ofhisteacher’sremark.A、cluesB、cue
Mr.Jamesissuchagoodteacher______weallloveandrespect.A、asB、thatC、who
Paulfounditincreasinglydifficulttohear,______hishearingwasbeginningt
Afterthreehoursofquestioningthesuspectbrokedownand______.A、acknowledge
ThefollowingsentenceshaveanindirectobjectEXCEPTA、Ourteachertellsussom
随机试题
Whatisthefirststepweshouldtake?Weshouldfirstlocate______onthemap.
AcrosstheUnitedStates,scientistsaremountingwhatmaybecomethemosti
[originaltext]Insectsanddiseasesthatattackfoodcropsaremovingasris
ConversationalSkillsPeoplewhousuallymakeusfeel
下列关于火灾风险说法中,正确的是()。A.火灾概率大,火灾风险高 B.火
广告代理公司为企业提供一套营销传播服务系统的整合营销传播的方法是A.同一外观法
《义务教育地理课程标准(2011年版)》规定:“义务教育地理课程是一门兼有自然学
以下选项中,属于施工进度计划编制依据的是()。A、合同工期 B、水文、地质
冷原子吸收法测汞中,KMnO4的作用是()。 A氧化还原性物质 B防止
2015年8月某商贸公司和张某、李某成立合伙企业,根据企业所得税和个人所得税相关
最新回复
(
0
)