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
2024-02-03
45
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/3417072.html
相关试题推荐
Imagineananimalthatbecomesfrozenincoldweather.Then,whenitgetswa
Imagineananimalthatbecomesfrozenincoldweather.Then,whenitgetswa
Imagineananimalthatbecomesfrozenincoldweather.Then,whenitgetswa
Imagineananimalthatbecomesfrozenincoldweather.Then,whenitgetswa
Imagineananimalthatbecomesfrozenincoldweather.Then,whenitgetswa
Peoplebecomequiteillogicalwhentheytryto【C1】______whatcanbeeatenan
Peoplebecomequiteillogicalwhentheytryto【C1】______whatcanbeeatenan
Peoplebecomequiteillogicalwhentheytryto【C1】______whatcanbeeatenan
Peoplebecomequiteillogicalwhentheytryto【C1】______whatcanbeeatenan
Peoplebecomequiteillogicalwhentheytryto【C1】______whatcanbeeatenan
随机试题
Whenandwherethenewhospitalwillhebuilt______amystery.A、toremainB、rem
Whichofthefollowingfractionshasthegreatestvalue?[img]2011q3/ct_egmatqm_e
属于芳香族氨基酸的是()。A.Tyr B.Arg C.His D.Asp
D
县级以上地方人民政府建设行政主管部门负责本行政区域内实施工程建设强制性标准的监督
肾脏具有多种功能,不包括()。A.调节体液、电解质、酸碱平衡和稳定的渗透
肾移植病人术前可能存在()A.低蛋白血症 B.贫血 C.凝血功能障碍
针对公路工程,定额建筑安装工程费包括()。A.定额直接费 B.定额设备购
不是新生儿筛查疾病是A、红细胞葡萄糖-6-磷酸脱氢酶缺乏症 B、先天性肾上腺皮
根据结构的反应特点分,雪荷载属于()。A.可变作用 B.静力作用 C.面荷
最新回复
(
0
)