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
12
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:https://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
MoreandmoreAmericansarereadingtheirowncreditreport.Creditreports
[originaltext]Fortwenty-fiveyears,Iwasafull-timethief,specializing
百货公司向贸易公司订购彩电100台,每台价格3000元,总货款为30万元,约定贸
复合树脂充填洞形制备特点()A.点线角应圆滑,洞缘角应制备短斜面
腹膜返折以上的直肠损伤应做()A.破裂口作肠道造瘘术 B.肠修补术,必要
甲公司适用的所得税税率为25%,其2020年度财务报告批准报出日为2021年4月
关于资产管理,以下表述错误的是()。A.资产管理人根据投资者授权,进行资产投资
(2018年真题)中国证监会及其派出机构可以将()记入期货公司及首席风险官诚信
关于我国财政政策的说法,错误的是()。A.在2015年宏观经济减速增长的特殊时
A.40.9 B.43.8 C.45.7 D.47.6
最新回复
(
0
)