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 first sound ever was the sound of the Big Bang. And, surprisingly, it doesn’t really sound all that bang-like. John Cramer,
The first sound ever was the sound of the Big Bang. And, surprisingly, it doesn’t really sound all that bang-like. John Cramer,
admin
2023-02-22
49
问题
The first sound ever was the sound of the Big Bang. And, surprisingly, it doesn’t really sound all that bang-like. John Cramer, a researcher at the University of Washington, has created two different renditions of what the big bang might have sounded like based on data from two different satellites.
During the first 100 to 700 thousand years after the Big Bang, the universe was far denser than the air on Earth, which means that sound waves could indeed move through it. (It’s not true that sound needs air to move, it simply needs a medium dense enough to propagate the waves.)【B6】_______________
Since before the Big Bang there was no universe, it seems safe to say that this is likely the first sound in the universe. But what was the first sound ever actually heard? To figure that out, we need to figure out which organism was first able to hear.
The first organisms to be able to hear things were probably the bony fishes, which appeared on this planet about 400 million years ago.【B7】____________________
So what were these fish hearing? What sounds did these early labyrinth organs pick up? Mostly vibrations coursed through their bodies as they moved through the water or, in later cases, as they walked along muddy banks.【B8】_______________It wasn’t until the Triassic period that eardrums showed up, which made it much easier for organisms to hear sounds transmitted through the air.
Fast forward a whole lot of time, and we get to humans.【B9】_______________Phonautographs transcribe sound waves into a line that is drawn on paper or glass. The first phonautographic recording that still exists is from 1860, and it’s a French folksong called "Au Clair de la Lune."
Once humans figured out how to record sound, they then wanted to share it. In 1875, Alexander Graham Bell transmitted the first sound vibrations between two receivers. The first radio broadcast, speech transmitted without wires, came on December 23, 1900. Reginald Aubrey Fessenden successfully transmitted his own voice between two 50-foot towers located on the Potomac River in Washington.
【B10】____________________
Today, humans make and record a whole lot of noise. So much that now, instead of trying to be the "first" to make or capture or send a sound, some are looking for a "last." The last place on Earth without human noise.
[A] But the sound would have been such a low frequency that, had humans been around at the time, we couldn’t have heard it. For listening purposes, Cramer has increased the frequency of the sound to fall into the range that humans can actually detect.
[B] The first sound that we recorded as a species was gathered by a device called a phonautograph, invented by a man named Edouard-Leon Scott de Martinville in 1857.
[C] Sound has a history, from the first sound ever, to the first sound heard by an animal, to the first recorded by a human being.
[D] This system works well when there’s water around, but as animals moved up and out of the water, vibrations in the air didn’t carry as much energy, and couldn’t wiggle the bones quite as much.
[E] There weren’t always sounds being transmitted through the air, and there weren’t always animals and humans around to make sounds. And there certainly weren’t always technologies around to record sounds, in basements and fancy studios and subway cars.
[F] The first cellphone call was made on April 3, 1973 by Martin Cooper who, used the historic moment to call a man named Joel Engel, his direct competitor who was also working on cellphone technology.
[G] These fish developed the ability to sense vibrations by adapting an organ they used to balance themselves in the water called the "balance labyrinth." Eventually, that labyrinth got more and more complicated, developing curves and features that would, a long time later, develop into a proto-cochlea.
【B9】
选项
答案
B
解析
空格后介绍了声波记振仪(Phonautographs)的工作原理以及现存首个记录的相关信息,其中提及的声波记振仪在前文都没有出现,若空格处也没有提及,则显得其出现得过于突兀,因此推测空格处应该会提到相关信息。各项中,只有B介绍了声波记振仪的相关信息,故选B。
转载请注明原文地址:https://kaotiyun.com/show/spMD777K
0
考研英语一
相关试题推荐
Scientistssentpatternsofelectricitycoursingacrosspeople’sbrains,coaxingtheirbrainstoseelettersthatweren’tthere.
Firstitwaspets,thenfish.Nowit’spoultryandpigs.The【C1】________ofanimalsallowedtofeedoninsectsisgrowing.Anew
Thinnerisn’talwaysbetter.Anumberofstudieshave【C1】________thatnormal-weightpeopleareinfactathigherriskofsomedi
ThedeclineinAmericanmanufacturingisacommonrefrain,particularlyfromDonaldTrump."Wedon’tmakeanythinganymore,"he
HarlanCobenbelievesthatifyou’reawriter,you’llfindthetime;andthatifyoucan’tfindthetime,thenwritingisn’tap
HarlanCobenbelievesthatifyou’reawriter,you’llfindthetime;andthatifyoucan’tfindthetime,thenwritingisn’tap
Scientistshavediscoveredapowerfulantibioticinthebloodstreamofgiantpandasthatcandestroybacteria.TheChineserese
Theworldisonthetopofastaggeringriseinthenumberofoldpeople,andtheywilllivelongerthaneverbefore.【C1】_______
Theworldisonthetopofastaggeringriseinthenumberofoldpeople,andtheywilllivelongerthaneverbefore.【C1】_______
Europeanbanks’fourth-quarterearnings,releasesofwhichareclusteredaroundearlyFebruary,havebeensurprisinglyoptimisti
随机试题
Beautyhasalwaysbeenregardedassomethingpraiseworthy.Almosteveryonethinksattractivepeoplearehappierandhealthier,h
胁下痛与哪项并见,最宜诊断为肝胆湿热证
小学生合理膳食的安排最好是
赵某,女,52岁,因患宫颈癌须行子宫切除术。做皮试2min后,赵女士面色苍白、冷汗、发绀、脉搏120/min,血压9.2/6kPh(69/45mmHg),四肢麻木,烦躁不安,护士应立即给病人注射()。
计算机操作系统只管理CPU和内存,不管理外设。()
如果中国政府在英国伦敦发行一笔美元债券,则该笔债券发行属于()的范畴。
企业规定批极限质量LQ=1%,使用某抽样方案对批进行验收,在极限质量处接收概率为18%,则()。
A、6%.B、6.5%.C、5%.D、7.5%.D
Hewouldhavefinishedhiscollegeeducation,buthe______toquitandfindajobtosupporthisfamily.[2007]
TheInquiryLetterGentlemen:Wesawyourwomen’sdressesandsuitsattheLondonfashionshowheldinNewYorkonOctober
最新回复
(
0
)