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(雀科鸣鸟) chirps(鸣) away to himself. Suddenly he notices a female bird nearby. He reali
Listening to Birdsong A male zebra finch(雀科鸣鸟) chirps(鸣) away to himself. Suddenly he notices a female bird nearby. He reali
admin
2010-01-16
74
问题
Listening to Birdsong
A male zebra finch(雀科鸣鸟) chirps(鸣) 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(啭音) 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 (活跃起来) 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(喋喋不休), 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.
选项
A、Female zebra finches are too shy to sing before males.
B、Male zebra finches sing louder than females.
C、Female zebra finches like to listen to unknown males sing.
D、Male zebra finches change their songs to attract females.
答案
D
解析
本文第一段"He realizes he has an audience and immediately changes his song"说明答案选项是正确的。其他选项没有提到或所述与本文相反。
转载请注明原文地址:https://kaotiyun.com/show/Q3Ld777K
本试题收录于:
职称英语理工类A级题库职称英语分类
0
职称英语理工类A级
职称英语
相关试题推荐
CTScansandLungCancerSmallorslow-growingnodules(小结节)discoveredonalungscanareunlikelytodevelopintotumors
AnimalshaveRightsRulingoutTheirUseinResearch?Toparaphrase18th-centurystatesmanEdmundBurke,"allthatisneed
ScienceandScientistThewordscienceisheardsoofteninmoderntimesthatalmosteverybodyhassomenotionofitsmeanin
Geneticsisthestudyofthebiologicalfactorsthatinfluenceheredityanddeterminevariationinlivingthings.
HypertensionDrugsFoundtoCutRiskofStrokeAustraliandoctorsdeclaredMondaythatacocktailofsimpleantihypertensive
SingingAlarmsCouldSavetheBlindIfyoucannotsee,youmaynotbeabletofindyourwayoutofaburningbuilding--andtha
SingingAlarmsCouldSavetheBlindIfyoucannotsee,youmaynotbeabletofindyourwayoutofaburningbuilding--andtha
Thestudyshowedthatmostofthegirls______.Whatpercentageofthegirlsconsideredthemselvesoverweight?
TheRoleofPressureGroupsinBritainGeneralElectionsinBritainareusuallyheldonlyonceeveryfiveyears.Governmentsca
Thesefiguresdonottakeintoaccountthechangesthathavetakenplaceinrecentyears.
随机试题
具有目标的前瞻性与操作的预想性两大特点的公文文种是()
在一个时期引起广泛流行,证候多相类似的感冒,称为
选购和使用手持式家用血糖分析仪,最重要的注意事项是
开展药学信息服务最终受益的是
申请执业药师注册的条件不包括
公路工程从规划到养护管理全过程所需要制定的技术、管理与服务标准,以及相关的安全、环保和经济方面的评价标准等,都属公路工程标准体系范围。()
在一般的压缩空气站中,最广泛采用的是( )。
按照公司规模划分的投资类型有()。
针对确定实际执行的重要性,注册会计师不适合按照财务报表整体重要性的50%比例确定的是()。
在心理测验的分类中,韦氏儿童智力量表属于()。
最新回复
(
0
)