首页
登录
职称英语
Locusts, which can consume their own weight in food each day, have a large n
Locusts, which can consume their own weight in food each day, have a large n
游客
2023-10-23
51
管理
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. [br] 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://tihaiku.com/zcyy/3121721.html
相关试题推荐
Our______ofhowfoodtastesisinfluencedbycutlery,includingitssize,weight
Autosalesjumped______intheUnitedStateslastmonthasconsumerscamebackto
Manypeople,especiallygirls,wouldliketoloseweightbyeatingless.Wha
Manypeople,especiallygirls,wouldliketoloseweightbyeatingless.Wha
A.acceptB.unquantifiableC.useD.whatE.purchasedF.consumedG.e
A.acceptB.unquantifiableC.useD.whatE.purchasedF.consumedG.e
A.acceptB.unquantifiableC.useD.whatE.purchasedF.consumedG.e
A.acceptB.unquantifiableC.useD.whatE.purchasedF.consumedG.e
A.acceptB.unquantifiableC.useD.whatE.purchasedF.consumedG.e
A.acceptB.unquantifiableC.useD.whatE.purchasedF.consumedG.e
随机试题
Rapidchangesintechnologyandincreasinginternationalcompetitionhavele
Worldleadersneedtotakeactionontheenergycrisisthatistakingshape
良性肿瘤的最显著的特点是()A.不转移 B.生长缓慢 C.不浸润周围组织
与春气相通应的脏是()A.肺 B.脾 C.肝 D.肾 E.心
导致莱姆病的病原体是A.沙眼衣原体B.斑疹伤寒立克次体C.伯氏疏螺旋体D.肺炎衣
公司因下列情形之一而解散,应进行清算()。A:公司章程规定的营业期限届满或者公司
市场主体是指在市场上从事交易活动的组织和个人,它具有经济上的()。A:均衡性
向卖方征收的税收包括( )。A.交易手续费 B.土地增值税 C.契税 D
烦恼和焦虑的区别点在于()。 (A)是否有明显的情绪(B)是否有痛苦的体验
A.增加和减小 B.减少和增大 C.为原来的一半和减小 D.为原来的一倍和
最新回复
(
0
)