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
Listening to Birdsong A male zebra finch chirps away to himself. Suddenly he notices a female bird nearby. He realizes he ha
Listening to Birdsong A male zebra finch chirps away to himself. Suddenly he notices a female bird nearby. He realizes he ha
admin
2016-07-17
69
问题
Listening to Birdsong
A male zebra finch chirps away to himself. Suddenly he notices a female bird nearby. He realizes he has an audience and immediately changes his song. Can the female tell the difference in his performance? According to a new study, the female zebra finch knows. And she prefers the special trills he creates when he sings to her. A male zebra finch changes his song when singing to a female in ways that people can barely detect. But the female finch can tell the difference.
Scientists had noticed slight variations in the songs of male zebra finches based on whether they were singing alone or whether there was a female(and potential mate)nearby. With an audience , the males sped up the pace of their songs and controlled the notes they used.
For this study, researchers Sarah C. Woolley and Allison Doupe at the University of California, San Francisco decided to focus attention on the listening females, which have not been well studied in the past.
In the study, Woolley and Doupe set up,a long cage with a sound speaker at each end. One broadcast the sound of a male zebra finch singing to himself, like someone singing in the shower. The other speaker broadcast a male performing for a female audience, as if he was giving a concert.
Female birds were placed between the two speakers. Some of the birds had mates. Others didn’t. The females shifted around a bit, and then most of them hopped over to sit beside just one speaker. All the birds that made a clear choice liked songs meant for a female audience, even if they’d never met the male.
Mated females also had a chance to listen to two different performance songs, one from an unknown male, and one from their mate. They spent more time listening to the concert version of their mates’ songs. This suggests that after a while, females learn to recognize—and prefer—the songs of their mates.
Scientists then studied the brains of the females. They found certain areas of the brain perked up when the birds listened to the concert songs. These brain areas may be involved in recognizing and evaluating the songs, and storing the memories of them.
This research deals with what’s called directed communication, when the communicator, or sender, focuses the message for a specific audience. One example is the way moms speak to their babies. Mothers around the world use the same sort of high—pitched sing-song chatter, and the babies respond best to those sounds. Songbirds are one of the only other species known to learn their communication, in this case their songs.
Which of the following can best reflect the theme of the passage?
选项
A、Chirping away.
B、Birdsongs as communication.
C、Zebra finches and their life.
D、Enjoying birdsongs.
答案
B
解析
文章中,科学家们研究发现雄性斑胸草雀在为雌性斑胸草雀唱歌时,会改变声调和速度,而它们的歌声实际上是一种交流方式。所以本题选B。
转载请注明原文地址:https://kaotiyun.com/show/uQhd777K
本试题收录于:
职称英语卫生类A级题库职称英语分类
0
职称英语卫生类A级
职称英语
相关试题推荐
"Reworked"asusedinParagraph1means"______".Themainideaofthelastparagraphisthatpeoplehave______.
AManagement’sReactiontotheLaborMovementBTheDeclineofanEarlyUnionCReasonsforStartingaUnionDComparisonbe
Themainideaofthefirstparagraphisthat______.InAmericansociety,youngpeopleoften______.
Asmoreandmorematerialfromotherculturesbecameavailable,Europeanscholarscametorecognizeevengreatercomplexityinm
WhathappenedtoPetelastFourthofJuly?WhichisNOTtrueofsparklers?
A.Theuseofanewtoolasasurgicalinstrument.B.Thecostofanoperation.C.Theprospectofsurgicalfuturewiththehelp
Duringthepasttenyearstherehavebeendramaticchangesintheinternationalsituation.
A.Everypatientisassignedtoaprimarynurse.B.Everypatientisassignedtoadoctor.C.ThefeaturesofnursinginBethIs
HowMenFacetheFatProblemItisapleasuretoseemenofacertainageworryingabouttheirweight.Listeningtothemis
SemcoAt21,RicardoSemlerbecamebossofhisfather’sbusinessinBrazil,Semco,whichsoldpartsforships.SemlerJunior
随机试题
支气管肺炎的炎症属于
因脾肾阳虚引起泄泻的主要表现是
具有清热生津功效的药物是
山西省位于黄河中游,是中华民族文明的发祥地,旅游资源丰富,入选世界遗产的是()。
【资料】英国心理学家高尔顿曾根据名家传记和其他方面的材料,选取了包括政治家、法官、军官、文学家、画家、音乐家在内的977位名人作为研究对象,他把对这些名人的家庭情况的调查结果同一般人的家庭情况进行比较。结果表明:这些名人的家属中,出名的父亲有89人,儿子1
漫画大意:桌子旁边有个垃圾桶,里面堆满了没有吃的食物,一个人趴在桌子上,桌上有好多食物没吃,手里提着酒瓶,酒都流到地上去了。请拟定标题,并展开谈谈你的认识。
税收:调节:差距
不属于我国学校德育基本内容的是
某公司举行晚会,一共排列了9个节目,有3个小品,2个相声和4首歌曲,其中小品不能连续出场,2个相声必须连续表演,而且相声后面出场的必须是小品,则这些节目的不同出场顺序共有()种。
Whoaretalking?
最新回复
(
0
)