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
27
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
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.Butearthquakescananddooccuratalldepthstoabout
Thisisthesmallhouselessthan15squaremetres,under______rooflivesalargefamilyofthreegenerations.
AllthePresident’sMen______oneoftheimportantbooksforhistorianswhostudytheWatergateScandal.
Afewyearsago,auniversityprofessortriedalittleexperiment.HesentChristmascardstoasampleofperfectstrangers.Alt
[A]existing[I]analysis[B]consumers[J]Enormously[C]released[K]identify[D]derivation[L]compelling[E]chief[M]ad
A.unpaidB.obviousC.differedD.linkE.disproportionatelyF.whetherG.explanationsH.madeupI.roleJ.shoulder
Humanbodyneedsavarietyofessentialnutrientstofunctionproperly.Unlessyouarea【C1】______,youprobablydon’tknowwhat
GivingAdviceWriteanoteofabout50-60wordsbasedonthefollowingsituation:Thesummervacationiscoming.Yousee
A、Becausetheyareverypoor.B、Becausetheirparentsdon’tthinkitimportant.C、Becausetheircultureisagainstit.D、Allthe
PASSAGEONEWhydidthegirlplaybasketballoverandoveragain?Whatcontributedtotheauthor’sfinalmasteringofthespeak
随机试题
A、Sheenjoyedlivingwithchildrenintheneighborhood.B、Shehopedtomakechangesbyeducatingchildren.C、Shewasassignedth
绩效评估的重心是【】
不属于刺灸法选择内容的是
A.医用纱布B.医用棉花C.医用橡皮膏D.一次性使用无菌注射器E.医用绷带
监理单位与被监理单位是通过( )来确立关系的。
《中华人民共和国建筑法》规定,( )可以规定实行强制监理的建筑工程的范围。
下列所得,实际适用10%的企业所得税税率的是()。
_______既是教师个体专业化的条件和保障,同时也最终代表着教师职业的专业化。
怨士族是对那些在工作、家庭、人际关系中产生的压力而整天抱怨的一类人的称呼。他们明知抱怨解决不了任何问题,可一有时间和机会,无论是和好朋友逛街、下班回家路上打电话,都是抱怨的良好时机.忍不住地“碎碎念”,这已成为他们排解压力的一种常规渠道。根据上述定义,下列
【S1】【S6】
最新回复
(
0
)