托福tpo28聽(tīng)力lecture2 Mirror Self-Recognition

托福tpo28聽(tīng)力lecture2 Mirror Self-Recognition，那么接下來(lái)就跟著中國(guó)教育在線的小編詳細(xì)了解一下吧。

Mirror Self-Recognition托福聽(tīng)力原文翻譯及問(wèn)題答案

一、Mirror Self-Recognition托福聽(tīng)力原文：

NARRATOR:Listen to part of a lecture in an animal behavior class.FEMALE PROFESSOR:As you know,researchers have long been interested in discovering exactly how intelligent animals are.Today we are going to talk about a particular cognitive ability some animals seem to have—the ability to recognize themselves in a mirror.FEMALE STUDENT:Oh.I've heard about that.Chimpanzees have it...FEMALE PROFESSOR:Right.Chimpanzees and other primates,—chimps,gorillas,orangutans,..and of course,humans.But it's also been found in elephants and bottlenose dolphins,a bit of a surprise.It's very rare.Most animals don't have it.And it's called mirror self-recognition,or MSR.FEMALE STUDENT:Well,how does it work?I-I mean...how do researchers know if elephants or chimps recognize themselves?FEMALE PROFESSOR:Researchers give them a mirror mark test.In the mirror mark test,researchers put a mark on the animal where the animal is unable to see it or smell it or feel it,like on the side of their head,without looking in the mirror.

Now,typically,when animals first see themselves in the mirror,they think they are seeing another animal.Often they will look for this animal behind the mirror.They may even exhibit aggressive behavior.

But some animals,after this period of exploration,exhibit behaviors that show they know they are looking at themselves.For instance,elephants will touch the mark on their heads with their trunks.Now,it's been assumed that primates and some other mammals stood alone at the top of the hierarchy of cognitive evolution.But recently,birds have been found to possess some of the same cognitive abilities!In particular,researchers have discovered these abilities in corvids,birds of the corvidae family.Corvids include ravens,jays,crows and magpies among others.And what kinds of cognitive abilities are we talking about?Well,corvids and some mammals have the ability to plan for the future,to store food for instance,in places where they can find it later.It's been suggested in fact that jays—corvids known for stealing each other's food,may hide their food precisely because they are projecting their own tendency to steal onto other jays.So let's talk about a study recently conducted with magpies.As I said,magpies are corvids.And because corvids have these other cognitive skills,researchers wanted to see if they were also capable of mirror self-recognition.So they gave them the mirror mark test,placing yellow sticker on the birds...black throat feathers.

At first,the magpies all engage in the same social behaviors that other animals do—looking behind the mirror,etc.But eventually,some of the birds,while looking in the mirror,kept scratching at the mark until they got rid of it.And they didn't scratch at it when there was no mirror around.So they passed the test.MALE STUDENT:Wow!Do any other birds have this ability?FEMALE PROFESSOR:Well,not that we know of.There was a study using pigeons,where researchers attempted to reduce MSR to a matter of conditioning,that is,they claimed that the ability to recognize oneself in a mirror could be learned.So these researchers basically trained some pigeons to pass the mirror mark test.

But two things are noteworthy here.One,no one's ever replicated the study.But more importantly,it misses the point.The issue isn't whether some behavior can be learned.It's whether a species has developed this ability spontaneously.MALE STUDENT:So what does the test tell us about corvids or chimpanzees?FEMALE PROFESSOR:Good question.For one thing,it is important because it sets animals with a sense of self apart from those without a sense of self.But more importantly,many researchers believe that MSR is indicative of other advanced cognitive abilities.

Self-awareness,even in its earliest stages,might entail an awareness of others,the ability to see their perspective,to look at the world from another's point of view.This is crucial,because it implies a high level of cognitive development.It's perhaps the first stage toward the development of empathy.MALE STUDENT:But birds...brains are so small,compared to primates...FEMALE PROFESSOR:True.Though corvids do have unusually large brains for birds.But size isn't the whole story.It's thought that primates are so intelligent because of a certain part of their brains,which birds simply don't have.

But there is an area in birds'brains that researchers believe governs similar cognitive functions.So primates'and birds'brains have evolved along different tracks,but ended up with similar abilities.

二、Mirror Self-Recognition托福聽(tīng)力中文翻譯：

旁白：在動(dòng)物行為課上聽(tīng)講座的一部分。女教授：如你所知，研究人員長(zhǎng)期以來(lái)一直對(duì)發(fā)現(xiàn)動(dòng)物到底有多聰明感興趣。今天，我們將討論一種特殊的認(rèn)知能力，一些動(dòng)物似乎具有在鏡子中識(shí)別自己的能力。女學(xué)生：哦。我聽(tīng)說(shuō)過(guò)。黑猩猩有…女教授：對(duì)。黑猩猩和其他靈長(zhǎng)類動(dòng)物——黑猩猩、大猩猩、猩猩……當(dāng)然還有人類。但在大象和寬吻海豚身上也發(fā)現(xiàn)了這種病毒，這有點(diǎn)令人驚訝。這是非常罕見(jiàn)的。大多數(shù)動(dòng)物都沒(méi)有。它被稱為鏡像自我識(shí)別，或MSR。女學(xué)生：那么，它是如何工作的？我是說(shuō)……研究人員如何知道大象或黑猩猩是否認(rèn)出自己？女教授：研究人員給他們做了鏡像標(biāo)記測(cè)試。在鏡子標(biāo)記測(cè)試中，研究人員在動(dòng)物無(wú)法看到、聞到或感覺(jué)到它的地方做了一個(gè)標(biāo)記，就像在他們的頭部側(cè)面，而不看鏡子。

現(xiàn)在，典型的情況是，當(dāng)動(dòng)物第一次在鏡子里看到自己時(shí)，他們會(huì)認(rèn)為自己看到的是另一種動(dòng)物。他們經(jīng)常會(huì)在鏡子后面尋找這種動(dòng)物。他們甚至可能表現(xiàn)出攻擊性行為。

但一些動(dòng)物在經(jīng)過(guò)這段時(shí)間的探索后，表現(xiàn)出的行為表明它們知道自己在看著自己。例如，大象會(huì)用鼻子觸摸頭上的標(biāo)記?，F(xiàn)在，人們認(rèn)為靈長(zhǎng)類和其他一些哺乳動(dòng)物在認(rèn)知進(jìn)化的層次結(jié)構(gòu)中獨(dú)占鰲頭。但最近，人們發(fā)現(xiàn)鳥(niǎo)類具有一些相同的認(rèn)知能力！特別是，研究人員發(fā)現(xiàn)了這種能力存在于烏鴉科鳥(niǎo)類烏鴉身上。尸體包括烏鴉、松鴉、烏鴉和喜鵲等。我們談?wù)摰氖鞘裁礃拥恼J(rèn)知能力？嗯，鴉科動(dòng)物和一些哺乳動(dòng)物有能力為未來(lái)做計(jì)劃，比如把食物儲(chǔ)存在以后可以找到的地方。事實(shí)上，有人認(rèn)為，以偷竊對(duì)方食物而聞名的松鴉可能會(huì)隱藏自己的食物，因?yàn)樗鼈冋?jì)劃著自己偷竊其他松鴉的傾向。因此，讓我們談?wù)勛罱鼘?duì)喜鵲進(jìn)行的一項(xiàng)研究。正如我所說(shuō)，喜鵲是烏鴉。由于鴉科動(dòng)物還有其他這些認(rèn)知技能，研究人員想看看它們是否也有鏡像自我識(shí)別的能力。所以他們給它們做了鏡面標(biāo)記測(cè)試，在鳥(niǎo)身上貼上黃色標(biāo)簽……黑色的喉嚨羽毛。

起初，喜鵲的社交行為與其他動(dòng)物在鏡子后面等時(shí)的社交行為相同。但最終，一些鳥(niǎo)兒在鏡子里看的時(shí)候，不停地抓著印記，直到把它去掉。當(dāng)周圍沒(méi)有鏡子的時(shí)候，他們不會(huì)抓它。所以他們通過(guò)了測(cè)試。男學(xué)生：哇！其他鳥(niǎo)類有這種能力嗎？女教授：嗯，據(jù)我們所知不是。有一項(xiàng)使用鴿子的研究，研究人員試圖將MSR降低為條件反射，也就是說(shuō)，他們聲稱在鏡子中識(shí)別自己的能力是可以學(xué)習(xí)的。因此，這些研究人員基本上訓(xùn)練了一些鴿子通過(guò)鏡像標(biāo)記測(cè)試。

但這里有兩件事值得注意。第一，沒(méi)有人重復(fù)過(guò)這項(xiàng)研究。但更重要的是，它沒(méi)有抓住要點(diǎn)。問(wèn)題不在于是否可以學(xué)會(huì)一些行為。這是一個(gè)物種是否自發(fā)地發(fā)展了這種能力。男學(xué)生：那么這個(gè)測(cè)試告訴我們關(guān)于烏鴉或黑猩猩的什么？女教授：好問(wèn)題。首先，它很重要，因?yàn)樗鼘⒂凶晕乙庾R(shí)的動(dòng)物與沒(méi)有自我意識(shí)的區(qū)別開(kāi)來(lái)。但更重要的是，許多研究人員認(rèn)為MSR是其他高級(jí)認(rèn)知能力的象征。

自我意識(shí)，即使在最早期階段，也可能需要意識(shí)到他人，能夠看到自己的觀點(diǎn)，能夠從他人的角度看待世界。這一點(diǎn)至關(guān)重要，因?yàn)樗馕吨咚降恼J(rèn)知發(fā)展。這可能是發(fā)展同理心的第一階段。男學(xué)生：但鳥(niǎo)類……與靈長(zhǎng)類動(dòng)物相比，大腦太小了……女教授：是的。雖然鴉科動(dòng)物的大腦確實(shí)非常大，適合鳥(niǎo)類。但規(guī)模并不是全部。人們認(rèn)為靈長(zhǎng)類之所以如此聰明，是因?yàn)樗鼈兇竽X的某一部分，而鳥(niǎo)類根本沒(méi)有。

但研究人員認(rèn)為，鳥(niǎo)類大腦中有一個(gè)區(qū)域控制著類似的認(rèn)知功能。因此，靈長(zhǎng)類和鳥(niǎo)類的大腦沿著不同的軌跡進(jìn)化，但最終具有相似的能力。

三、Mirror Self-Recognition托福聽(tīng)力問(wèn)題：

Q1:1.What is the main purpose of the lecture?

A.To show that some birds have cognitive skills similar to those of primates

B.To explain how the brains of certain primates and birds involved

C.To compare different tests that measure the cognitive abilities of animals

D.To describe a study of the relationship between brain size and cognitive abilities

Q2:2.When giving magpies the mirror mark test,why did researchers place the mark on the magpies'throats?

A.Throat markings trigger aggressive behavior in other magpies.

B.Throat markings are extremely rare in magpies.

C.Magpies cannot see their own throats without looking in a mirror.

D.Magpies cannot easily remove a mark from their throats.

Q3:3.According to the professor,some corvids are known to hide their food.What possible reasons does she provide for this behavior?Click on two answers.

A.They are ensuring that they will have food to eat at a later point in time.

B.They want to keep their food in a single location that they can easily defend.

C.They have been conditioned to exhibit this type of behavior.

D.They may be projecting their own behavioral tendencies onto other corvids.

Q4:4.What is the professor's attitude toward the study on pigeons and mirror self-recognition?

A.She is surprised that the studies have not been replicated.

B.She believes the study's findings are not very meaningful.

C.She expects that further studies will show similar results.

D.She thinks that it confirms what is known about magpies and jays.

Q5:5.What does the professor imply about animals that exhibit mirror self-recognition?

A.They acquired this ability through recent evolutionary changes.

B.They are not necessarily more intelligent than other animals.

C.Their brains all have an identical structure that governs this ability.

D.They may be able to understand other animal's perspective.

Q6:6.According to the professor,what conclusion can be drawn from what is now known about corvids'brains?

A.The area in corvids’brains that governs cognitive functions governs other functions as well.

B.Corvids’brains have evolved in the same way as other birds’brains,only more rapidly.

C.Corvids’and primates’brains have evolved differently but have some similar cognitive abilities.

D.The cognitive abilities of different types of corvids vary greatly.

四、Mirror Self-Recognition托福聽(tīng)力答案：

A1:正確答案：A

A2:正確答案：C

A3:正確答案：AD

A4:正確答案：B

A5:正確答案：D

A6:正確答案：6

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