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
外语
Locusts, which can consume their own weight in food each day, have a large neuron called the locust giant movement detector (LGM
Locusts, which can consume their own weight in food each day, have a large neuron called the locust giant movement detector (LGM
admin
2021-10-20
29
问题
Locusts, which can consume their own weight in food each day, have a large neuron called the locust giant movement detector (LGMD) located behind their eyes. The LGMD releases bursts of energy whenever a locust is on a collision course with another locust or a predatory bird.
A few years ago Rind and her colleagues studied the activity of the LGMD as locusts watched action scenes from the movie Star Wars. The team found that the LGMD releases more energy when something is coming directly at the locust.
These spikes of energy, called action potentials, prompt the locusts to take evasive action. The entire process from motion detection to reaction takes about 45 milliseconds—or 45 thousandths of a second.
"Locusts, like most insects, can see many more images per second than we do. This means they can react in time to things that are approaching very rapidly and so make their escape before collision," Rind said.
The locusts’ ability to see many more images per second than humans gives them a remarkable view of the world. For humans, it would be like watching everything go by in slow motion, Rind added.
And because the insects only detect things that are on a collision course with them, the locusts are ignorant of all other movements. It’s a particularly useful trait, as the locusts travel in dense swarms akin to rush hour traffic.
"The LGMD system is complemented by the brain of the locust, which provides the necessary experience and knowledge to really react according to the situation," said Jorge Cuadri, a project engineer with Spain’s National Centre of Microelectronics. Cuadri is helping to develop the circuitry (电路装置) for the locust-inspired crash avoidance technology.
Cuadri and his colleagues are responsible for adapting the locust collision-avoidance system to the automotive environment.
Their adapted system is based on a single, integrated step that combines visual optics and electronics. The conventional way of doing this would involve two steps: First, a camera would capture the image. Second, a digital processor would analyze it.
The two-step approach, which uses radar images, is expensive and currently limited only to luxury cars, Rind said.
What would immediately happen if human ’beings were endowed with the power to see a good many images in quite a short instant?
选项
A、Every movement would become so easily observable that it is just like in slow motion.
B、Human beings would be ignorant of all other movements except things that are on a crash route with them.
C、Everything around would pass by at a lower speed.
D、Human beings would be very sensitive to those cars that are about to bump.
答案
A
解析
题干中的假设与蝗虫具有的能力一致(蝗虫每秒钟看到的图像比人类要多许多),第5段最后一句说到,蝗虫的这种能力在人类身上(For humans…),就好比我们在看慢镜头一样,故A正确。
转载请注明原文地址:https://kaotiyun.com/show/9jtK777K
0
专业英语四级
相关试题推荐
Manytheoriesconcerningthecausesofjuveniledelinquency(crimescommittedbyyoungpeople)focuseitherontheindividualor
AccordingtoIanPearson,afuturologist,theseareamongthedevelopmentsscheduledforthefirstfewdecadesofthenewmillen
Targetyesterday【C1】______WallStreetexpectationswhenit【C2】______a21.1percentriseinquarterlyearnings.GainsinTarget’s
A.dietB.regularlyC.healthyD.commonlyE.reducedF.samplesG.containsH.participatedI.drinkJ.measuredK.av
Researchershaveestablishedthatwhenpeoplearementallyengaged,biochemicalchangesoccurinthebrainthatallowittoact
A.negligibleB.overuseC.proceduresD.abnormalE.patientsF.potentialG.compliedH.collaboratedI.madeJ.involved
Thepolicehaveofferedalarge______forinformationleadingtotherobber’sarrest.
PASSAGETHREEWhydocynicsregardfootballas"adangertothepeaceofSouthAmerica"’!
[A]benefits[B]moving[C]restrict[D]waste[E]similar[F]save[G]separately[H]different[I]multiple[J]nonsalaried[K]number[L]
Thebankisreportedinthelocalnewspaper_____inbroaddaylightyesterday.
随机试题
我国外汇管理的机关是【】
[*]
男性,30岁,4年来偶有上腹痛,今天进食后突然上腹痛,逐渐加重至剧烈难忍,伴有恶心、呕吐,体温37.8℃。体查:上腹部稍紧张,剑下有压痛,可疑反跳痛,肠鸣音减弱。检查血象:白细胞12.0×109/L,N80%,ALT(SGPT)40U/L,TBil1
管电流的改变,一般是
关于淋巴结的功能,错误的是()。
请根据以下业务描述,判断填制《出境货物报检单》各项内容的正误,完成以下判断题(见报检单上标的题号)。陕西中电进出口有限公司(报检备案号;5100811252)与国外一家公司签订一批电子器件出口合同。该产品生产后存放于该公司仓库,于2004年4月间装
钻石是在地球深部高压、高温条件下形成的一种由碳元素组成的单质晶体。克拉是钻石国际标准的重量计算单位,一克拉等于()。
Windows操作系统的基本网络组件包括()
编写如下程序:PrivateSubCommandlClick()DimiAsInteger,jAsIntegern=InputBox(“输入一个大于1的正整数”)Fori=2TonForj=2ToSqr(i)Ifi
v-mailservicemayprovideamailservicetogetherwith______.Fromthelastsentenceofthispassage,wecometoknowthat__
最新回复
(
0
)