首页
登录
职称英语
[originaltext] (30)Millions of youngsters across Europe could suffer permane
[originaltext] (30)Millions of youngsters across Europe could suffer permane
游客
2024-05-20
43
管理
问题
(30)Millions of youngsters across Europe could suffer permanent hearing loss after five years if they listen to MP3 players at too high a volume for more than five hours a week, European Union (EU) scientists warned Monday. The scientists’ study, requested by the European Commission, attacked the concept of "leisure noise," saying children and teenagers should be protected from increasingly high sound levels. "There has been increasing concern about exposure from the new generation of personal music players which can reproduce sounds at very high volumes without loss of quality," the Commission, the EU’s executive arm, said in a statement. (31)"Risk for hearing damage depends on sound level and exposure time," it said. "More and more young people were exposed to the significant threat that leisure noise posed to hearing." Commission experts estimate that between 50 and 100 million people listen to portable music players on a daily basis. (32) If they listened for only five hours a week at more than 89 decibels (分贝), they would already exceed EU limits for noise allowed in the workplace. But if they listened for longer periods, they risked permanent hearing loss after five years. The scientists calculated the number of people in that risk category at between 5% and 10% of listeners, meaning up to 10 million people in the European Union. Sales of personal music players have soared in EU countries in recent years, particularly of MP3 players. Commission experts estimate unit sales between 184 and 246 million for all portable audio devices just over the last four years, of which MP3 players range between 124 and 165 million.
30. What will happen to people listening to MP3 players at too high a volume for a long time?
31. According to the EU statement, what factors decide the risk for hearing damage?
32. What might be the EU limits for noise allowed in the workplace?
选项
A、Less than 100 decibels.
B、Less than 184 decibels.
C、Less than 89 decibels.
D、Less than 124 decibels.
答案
C
解析
细节辨认题。短文中指出,专家认为,即使人们每周只听5个小时MP3,音量高于89分贝,那就已经超过了欧盟的“工作场合噪音最高限值”。凶此,工作环境的噪音限值应该低于89分贝。
转载请注明原文地址:https://tihaiku.com/zcyy/3603632.html
相关试题推荐
[originaltext]TheeducationalTVshowforkids"SesameStreet"willcelebra
[originaltext]TheeducationalTVshowforkids"SesameStreet"willcelebra
[originaltext](30)Studentsseekingsuccessshouldlookformentorsamongri
[originaltext](30)Studentsseekingsuccessshouldlookformentorsamongri
[originaltext]W:I’mFaithSmith.Thisweekonourprogram,wewilllookatinte
[originaltext]W:You’rebusyrunningtheFamiliesandWorkInstitute.(23)Why
[originaltext]W:Ican’tconcentrateonthisfinalreportanylonger.MaybeIs
[originaltext]W:Ican’tconcentrateonthisfinalreportanylonger.MaybeIs
[originaltext]W:Ican’tconcentrateonthisfinalreportanylonger.MaybeIs
[originaltext]W:Ican’tconcentrateonthisfinalreportanylonger.MaybeIs
随机试题
ManycriticsofourBritish"publicschool"considerthatfarmorestressi
关于著作权保护期,说法错误的有( )。A.作者死亡后,其署名权依然受著作权法的
用于确诊实验的分析方法,必须有较高的()。A.诊断灵敏度 B.诊断特异性 C
颌位关系记录是用来记录A.垂直距离和正中关系位 B.面下1/3高度 C.水平
下列哪首作品是由作曲家冼星海创作的?()A.《共青团员之歌》 B.《酸枣刺
蓄电池在使用过程中有时会比重、容量、电压等不均衡的情况,应进行(),使电池都达到
慢性呼吸衰竭患者的氧疗原则是A:持续高流量面罩吸氧 B:间断高流量面罩吸氧
下列哪些项是实现区域生态安全格局的途径?()A.协调城市发展、农业与自然保护
根据《合伙企业法》的规定,下列情形属于普通合伙企业合伙人当然退伙的有()。A.合
对弃渣场进行工程分析时需明确( )等。A.弃渣场的数量 B.弃渣场的占地类型
最新回复
(
0
)