首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
The Magic of Sound Music is one of the most beautiful forms of artistic expressions ever invented. In movies and plays, musi
The Magic of Sound Music is one of the most beautiful forms of artistic expressions ever invented. In movies and plays, musi
admin
2020-03-31
90
问题
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. Is it true that an ordinary musical instrument can be so powerful?
Our eardrums can withstand sound within 20 to 80 decibels. Once sound exceeds this limit, even beautiful music will become ear-splitting noise and harm health. A strong blast of high sound can twist and break a solid iron sheet. 41
The noise from a plane’s engine is over 140 decibels. However, the sound of a flute is at most a few decibels. 42 It has been proven that people who have worked in an environment with a high sound intensity for a long time suffer varying degrees of heart disease or altered brain waves.
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, 000 Hz is called ultrasonic. 43 It does no harm to health.
Sound less than 20 Hz is called infrasonic waves. When we move, the air will vibrate. 44 As the frequency of infrasonic waves is close to that of people’s internal organs, infrasonic wave may cause resonance in human bodies. As a result, people’s vision may weaken and internal organs may rupture. 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. 45 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.
A. High sound of 150 decibels can kill a healthy rat.
B. The vibration of-air can produce infrasonic waves.
C. We cannot play high-pitched music with ordinary musical instruments.
D. If the intensity of infrasonic wave exceeds 160 decibels, it is extremely harmful.
E. Dolphins, whales and bats can make such high-frequency sound
F. Therefore, the sound of ordinary musical instruments cannot harm your health.
选项
答案
E
解析
“空43”前的句子说超过2万赫兹的声音称为超声波。“空43”后的句子说超声波对人体无害。位于这两个句子之间的“空43”的内容应该与超声波有关。选项E说海豚、鲸鱼和蝙蝠能发出这种高频率的声音。从内容上看,选项E与上下文意思连贯,因此是答案。
转载请注明原文地址:https://kaotiyun.com/show/Sb1Z777K
0
考研英语一
相关试题推荐
Consuminghigh-qualityplantfoodssuchaswholegrains,fruits,vegetables,nutsandlegumesmaysubstantiallylowerriskofde
It’snotjustlonelyatthetop;itcanbe"disengaging"too.Manyofthemostunhappy,unproductiveandpotentially【C1】______em
TheUnitedStatesiswidelyrecognizedtohaveaprivateeconomybecauseprivatelyownedbusinessplay【C1】______roles.TheAmer
Parenthoodisn’tacareer-killer.Infact,economistswithtwoormorekidstendtoproducemoreresearch,notless,thantheir
Parenthoodisn’tacareer-killer.Infact,economistswithtwoormorekidstendtoproducemoreresearch,notless,thantheir
With950millionpeople,IndiarankssecondtoChinaamongthemostpopulouscountries.ButsinceChina【C1】______afamilyplan
Americans’prideandfaithoftheireconomicsystem,【C1】______thatitprovidesopportunitiesforallcitizenstohavegoodliv
Americans’prideandfaithoftheireconomicsystem,【C1】______thatitprovidesopportunitiesforallcitizenstohavegoodliv
Americans’prideandfaithoftheireconomicsystem,【C1】______thatitprovidesopportunitiesforallcitizenstohavegoodliv
ThereisgrowinginterestinEastJapanRailwayCo.ltd.,oneofthesixcompanies,createdoutoftheprivatizednationalrailw
随机试题
来自胸腺的淋巴细胞在淋巴结内增殖的部位是
下列关于普通高中毕业会考的叙述不正确的是()
病人股骨下1/3斜形骨折,首选的牵引为()
严重冠状动脉狭窄是指冠脉狭窄程度达
齐某在A市B区利用网络捏造和散布虚假事实,宣称刘某系当地黑社会组织“大哥”,A市中级法院院长王某为其“保护伞”。刘某以齐某诽谤为由,向B区法院提起自诉。关于本案处理,下列哪一选项是正确的?
场(厂)址比较的投资费用比较包括()。
公安机关是党委的一个职能部门,但又不同于一般行政机关;人民警察是国家公务人员,但又不同于政府其他部门的公务员。()
你单位上群众反映的问题得不到解决,你打算如何处理?
党的十八届三中全会通过了《中共中央关于全面深化改革若干重大问题的决定》,对全面深化改革作出了战略部署,总目标是完善和发展中国特色社会主义制度,推进国家治理体系和治理能力现代化。完善和发展中国特色社会主义制度,推进国家治理体系和治理能力现代化,是两句话组成的
CPU中,除了内部总线和必要的寄存器外,主要的两大部件分别是运算器和
最新回复
(
0
)