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
From the goose that laid the golden egg to the race between the tortoise and the hare, Aesop’s fables are known for teaching mor
From the goose that laid the golden egg to the race between the tortoise and the hare, Aesop’s fables are known for teaching mor
admin
2021-04-29
61
问题
From the goose that laid the golden egg to the race between the tortoise and the hare, Aesop’s fables are known for teaching moral lessons rather than literally being true. But a new study says at least one such tale might really have happened.
It’s the fable about a thirsty crow (乌鸦). The bird comes across a jar with the water level too low for him to reach. The crow raises the water level by dropping stones into the jar. The moral tells: Little by little does the trick, or in other retellings, necessity is the mother of invention.
Now, scientists report that some relatives of crows called rooks used the same stone-dropping strategy to get at a floating worm. Results of experiments with three birds were published online by the journal Current Biology.
Rooks, like crows, had already been shown to use tools in previous experiments. Christopher Bird of Cambridge University and a colleague exposed the rooks to a 6-inch-tall clear plastic tube containing water, with a worm on its surface. The birds used the stone-dropping trick naturally and appeared to estimate how many stones they would need. They learned quickly that larger stones work better.
In an accompanying commentary, Alex Taylor and Russell Gray of the University of Auckland in New Zealand noted that in an earlier experiment, the same birds had dropped a single stone into a tube to get food released at the bottom. So maybe they were just following that strategy again when they saw the tube in the new experiment, the scientists suggested. But Bird’s paper argued there’s more to it: The rooks dropped multiple stones rather than just one before reaching for the worm, and they reached for it at the top of the tube rather than trying to reach the food at the bottom.
The researchers also said Aesop’s crow might have actually been a rook, since both kinds of birds were called crows in the past.
According to Alex Taylor and Russell Gray, it seems that rooks_____________.
选项
A、tend to follow the others’ strategy
B、can remember their former strategy
C、can change strategy in different situations
D、seldom use the same strategy in experiments
答案
B
解析
根据文章第五段前面部分“In an accompanying commentary, Alex Taylor and Russell Gray of the University of Auckland in New Zealand noted that in an earlier experiment, the same birds had dropped a single stone into a tube to get food released at the bottom. So maybe they were just following that strategy again when they saw the tube in the new experiment, the scientist suggested.”可知,Alex Taylor and Russell Gray认为,这些鸟在先前的实验中遇到相同的管子时曾用过投石的方法吃到了虫子,可能看到这个实验中的管子,记起了先前的相似实验经历,用了同样的方法,故选B。
转载请注明原文地址:https://kaotiyun.com/show/a9tO777K
0
成人本科学位英语
相关试题推荐
Doyouknowinsurance(保险)?Buyinginsuranceisa【C1】______bywhichpeoplecanprotectthemselvesagainstlargelosses.Protectio
Englandisnotabigcountry:fromnorthtosouthandfromeasttowestitisonlyaboutthreehundredmilesacross.Butforas
Toooftenyoungpeoplegetthemselvesemployedquitebyaccident,notknowingwhatliesinthewayofopportunityforpromotion,
Traditionally,universitieshavecarriedouttwomainactivities:researchandteaching.Manyexpertswouldarguethatboththes
Maryistheonlystudentinmyclass________speaksChinese.
"Theoldladywasslightlyinjuredinanaccident."Thistellsusthatherinjurywas______.
Wouldyouriskyourlifeforacountrythatconsideredyouasecond-classcitizen?Wouldyoujoinamilitarythataskedyoutor
Themanagerofthecompanysentmeafaxsayingthathewouldvisitus()nextspring.
SpeakerA:IbrokemyanklelastTuesday.AndnowIhavetobeoncrutchesforsixweeks.SpeakerB:______.Ifthereisanythin
Theoldgentlemanneverfailstohelp______isinneedofhishelp.
随机试题
试述现代企业的基本特征。
树的子树是无序的。()
若幂级数(x-3)n在x=1处发散,在x=5处收敛,则在点x=0,x=2,x=4,x=6中使该级数发散的点的个数有()
设y=sin(2x+1),则y"=_______.
患儿,10岁,反复突然意识丧失,每次持续数秒缓解。发作时面部抽动,脑电图提示棘慢复合波。最合理的诊断是:()
下列哪项不是子痼前期的预测性诊断方法
()是保税货物通关程序中向海关办理的第一个手续,是保税业务的开始,也是经营者与海关建立承担法律责任和履行监管职责的法律关系的起点。
简述专家型教师和新任教师在课堂教学过程中的差异。(2014·湖北)
某水池的容积是100立方米,它有甲、乙两个进水管和一个排水管,甲、乙两管单独注满水池分别需要10小时和15小时。水池中原来有些水,如果甲、乙两管同时进水而排水管放水,需要6小时将水池中的水放完,如果只开甲管进水而排水管放水,需要2.小时将水池中的水放完。问
以下关于汇率理论的看法中错误的是()。
最新回复
(
0
)