首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
共用题干 第二篇The Magic of SoundMusic is one of the most beautiful forms of artist...
共用题干 第二篇The Magic of SoundMusic is one of the most beautiful forms of artist...
admin
2020-12-24
13
问题
共用题干
第二篇
The Magic of Sound
Music is one of the most beautiful forms of artistic expressions ever invented.In movies and plays, music has an added function:it not only moves people but also can shock people.
Our eardrums can withstand sound within 20 to 80 decibels(分贝).Once sound exceeds this limit , even beautiful music will become ear-splitting noise and harm health.A strong blast(响声)of high sound can twist and break a solid iron sheet.High sound of 150 decibels can kill a healthy rat.
In movies,sometimes the hero can produce a sound that ordinary people can't hear and only those who
have the same ability can feel.In nature,there is actually sound that is beyond our hearing.In physics,the sound that exceeds 20,000Hz is called ultrasonic(超音波的).Dolphins, whales and bats can make such high-frequency sound.It does no harm to health.
Sound less than 20Hz is called infrasonic(次声)waves.When we move, the air will vibrate.The vibration of air can produce infrasonic waves.As the frequency of infrasonic waves is close to that of people's internal organs, infrasonic wave may cause resonance(共振)in human bodies.As a result,people's vision may weaken and internal organs may rupture(断裂).However,whether an infrasonic wave can be used as a weapon depends on its intensity.If its intensity is very low,it won't damage internal organs or a person's health.If the intensity of infrasonic wave exceeds 160 decibels,it is extremely harmful.When wind blows at a force of 3 or 4 over the sea,it will produce infrasonic waves of several decibels.Only typhoons can produce infrasonic waves of over 100 decibels.At present,scientists can only produce infrasonic weapons in the lab with the help of advanced scientific tools and powerful electric power.
选项
What could be the best title of the passage?
A:The power of music.
B:The harms of noises.
C:The magic of sound.
D:The discovery of infrasonic waves.
答案
C
解析
本篇文章主要讲了声音的奇妙之处以及超声波和次声波的一些特征。
根据文章的标题“The Magic of Sound"以及全文可知,文章最恰当的标题为C项。其余选项表述都不全面。
根据第二段第一、二句可知,我们的耳膜可以承受的声音在20分贝到80分贝之间,只要超过了这个界限,再美妙的音乐也会成为噪音,损害健康。由此可知,音乐也可能会对人的健康造成危害。
根据第二段第一、二句可知,我们的耳膜可以承受的声音在20分贝到80分贝之间,超过了这个界限,再美妙的音乐也会成为噪音,损害健康。由此可见,超过80分贝的声音对人是有害的。
第三段第二句表明,自然界中存在人类听不到的声音。根据第三段第三句可知,这种超过两万赫兹的声音在物理学中被称为超声波。由此可知,超声波是人类听不到的声音。
根据第四段第四句可知,当次声波的频率与人体内部器官的频率相当时,就会对人体造成危害,又由常理可知振动会产生声音,可推断出人体内存在次声波,因此选择B项。只有当次声波频率与人体内部器官的频率相近时,次声波才会对人有害,所以A项错误;只有超过 160分贝的次声波才能被用作致命武器,并且由最后一段最后一句“At present, scientists can only produce infrasonic weapons in the lab…”可知,次声波用作致命武器还只是实验室的实验结果,现实中并没有出现,所以C项错误;最后一段没有表明次声波可以改善视力,所以D项错误。
转载请注明原文地址:https://ti.zuoweng.com/ti/I3sQKKKQ
相关试题推荐
共用题干 LifeConnectedWithComputerAftertoolongontheNet,evenaphonecall...
共用题干 LifeConnectedWithComputerAftertoolongontheNet,evenaphonecall...
共用题干 HowtoGetAlongWellWithYourBoss1Beforeyouarguewithyourboss,c...
共用题干 HowtoGetAlongWellWithYourBoss1Beforeyouarguewithyourboss,c...
共用题干 HowtoGetAlongWellWithYourBoss1Beforeyouarguewithyourboss,c...
共用题干 TheOnlyWayIsUpThinkofamoderncityandthefirstimigethatcome...
共用题干 TheOnlyWayIsUpThinkofamoderncityandthefirstimigethatcome...
共用题干 TheOnlyWayIsUpThinkofamoderncityandthefirstimigethatcome...
共用题干 TheOnlyWayIsUpThinkofamoderncityandthefirstimigethatcome...
共用题干 ManofFewWordsEveryonechasessuccess,butnotallofuswanttobefa...
随机试题
共用题干 某汽车企业生产15-8型号汽车,年产量10000台,每台15-8型号
关于ETF基金份额净值的说法错误的是()。
债券的利率期限结构主要包括()收益率曲线。 Ⅰ.反向 Ⅱ.水平 Ⅲ.正向
某施工现场宿舍的设置参数中,符合要求的是()。
尿液检查一般须在多少时间内完成
急性肾小球肾炎在病程早期突然发生惊厥,应首先考虑
识别转录起始点的是Ap因子B核心酶C聚合酶α亚基Dσ因子EDnaB蛋白
药物与受体结合时采取的构象为A:最低能量构象B:反式构象C:优势构象D:扭曲构象E:药效构象
某收益性物业的潜在毛租金收入为30万元,假设在某报告期内的空置率为20%,所有用户都能按时缴纳租金,物业的其他收入为5万元,则此报告期该物业的有效毛收入为...
某法院对甲、乙之间的买卖合同纠纷案件作出了判决,当事人在上诉期内均未上诉。后该法院发现判决书将支付房租数额2000元误写成了20,000元。法院对...