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
2012-06-26
34
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. 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 spontaneously 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.
The word "spontaneously" (Paragraph 4) is closest in meaning to "______".
选项
A、surely
B、naturally
C、voluntarily
D、quickly
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/MSTO777K
0
研究生英语学位课统考(GET)
相关试题推荐
Peasants______over80percentoftheChinesepopulation
ThoughhewasbornandbroughtupinAmerica,hecanspeak______Chinese.(2013年厦门大学考博试题)
Thecompanywill______toitsagreement,nomatterhowcostlytheprocessmaybe.(2002年中国人民大学考博试题)
TheUniversityinTransformation,editedbyAustralianfuturistsSohailInayatullahandJenniferGidley,presentssome20highly
PersonalcomputersandtheInternetgivepeoplenewchoicesabouthowtospendtheirtime.Somemayusethisfreedomtosharele
Theprevailingunionofpassionateinterestindetailedfactswithequaldevotiontoabstractgeneralizationisahallmarkofou
Some23millionadditionalU.S.residentsareexpectedtobecomemoreregularusersoftheU.S.healthcaresysteminthenext
Ifthesalesmenarenotgiventangiblebenefitsforahighvolumeofsales,theywilllosetheirmotivation.
学生活动是美国大学的一个显著特点,每周都有数不清的由学生组织的各种各样的活动。这些活动涵盖了体育、文艺、文化、政治和社会等各个方面,其主要目的是为了娱乐。新的学生活动组织不断涌现,而中国学生的参与使这一局面变得更加热烈,他们甚至在耶鲁大学上演了曹禺的话剧《
Fearisthemostdestructiveforceintheworld,forit______motivationandcreativity.
随机试题
根据《莛发事件应对法》,关于突发事件等级划分的说法,正确的是()。
充气式蓄能器的功用有哪些?
全血标本在室温放置一段时间后,血糖浓度有何变化
每种药品批准生产上市并不意味着对其评价的结束的原因是
如果上市公司以其应付票据作为股利支付给股东,则这种股利的支付方式称为()。
Thereareadvantageforstudentstoworkwhile【M1】______studyingatschool.Oneofthemwasthat【M2】______theycanearnmone
Everygenerationofpeopleisdifferentinimportantways.Howisyourgenerationdifferentfromyourparents’generation?Uses
LaughterIstheKeytoHappinessI.Howtobehappier?1)tonsofthingsrelatedtohappiness—【T1】,hobby,agoodjob,awarmf
A、Becausemanypeoplearen’tsociable.B、Becausemostpeopleareshybynature.C、Becausenobodywilllaughatshypeople.D、Bec
Thereisapopularbeliefamongparentsthatschoolsarenolongerinterestedinspelling.Thisis,however,a【C1】______.Nosch
最新回复
(
0
)