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
Previous research by scientists from Keil University in Germany monitored Adelie penguins and noted that the birds’ heart rates
Previous research by scientists from Keil University in Germany monitored Adelie penguins and noted that the birds’ heart rates
admin
2014-01-13
53
问题
Previous research by scientists from Keil University in Germany monitored Adelie penguins and noted that the birds’ heart rates increased dramatically at the sight of a human as far as 30 meters away. But new research using an artificial egg, which is equipped to measure heart rates, disputes this. Scientists from the Scott Polar Research Institute at Cambridge say that a slow moving human who does not approach the nest too closely, is not perceived as a threat by penguins.
The earlier findings have been used to partly explain me 20 per cent drop in populations of certain types of penguins near tourist sites. However, tour operators have continued to insist mat their activities do not adversely affect wildlife in Antarctica, saying they encourage non-disruptive behavior in tourists, and that the decline in penguin numbers is caused by other factors.
Amanda Nimon of the Scott Polar Research Institute spent three southern hemisphere summers at Cuverville Island in Antarctica studying penguin behavior towards humans. " A nesting penguin will react very differently to a person rapidly and closely approaching the nest," says Nimon. "First they exhibit large and prolonged heart rate changes and then they often flee the nest leaving it open for predators(捕食者)to fly in and remove eggs or chicks. " The artificial egg, specially developed for the project, monitored both the parent who had been disturbed when the egg was placed in the nest and the other parent as they both took it in turns to guard the nest.
However, Boris Culik, who monitored the Adelie penguins, believes that Nimon’s findings do not invalidate his own research. He points out that species behave differently — and Nimon’s work was with Gentoo penguins. Nimon and her colleagues believe that Culik’s research was methodologically flawed because the monitoring of penguins’ responses entailed capturing and restraining the birds and fitting them with heart-rate transmitters. Therefore, argues Nimon, it would not be surprising if they became stressed on seeing a human subsequently.
According to the passage, which factor is the most important influence for penguins’s heart rates?
选项
A、Climate change.
B、Tourist activities.
C、Scientific research.
D、Not firmly known yet.
答案
D
解析
细节推理题。文章对企鹅是否会因为游客而受到影响这个问题进行了讨论。通读全文可知文章并没有得出什么具体的影响因素的结论。故答案为D。
转载请注明原文地址:https://kaotiyun.com/show/zzQO777K
0
考博英语
相关试题推荐
AtleastsincetheIndustrialRevolution,genderroleshavebeeninastateoftransition.Asaresult,culturalscriptsaboutm
Whentravelerslackanawarenessof【51】timeisregulatedinaforeigncountry,theycanexpecttofeelsomewhatdisoriented.Sin
Whentravelerslackanawarenessof【51】timeisregulatedinaforeigncountry,theycanexpecttofeelsomewhatdisoriented.Sin
Eversincethisgovernment’stermbegan,theattitudetoteachershasbeenovershadowedbythemantrathatgoodteacherscannot
Themainideaofthesebusiness—schoolacademicsisappealing.Inawordwherecompaniesmustadapttonewtechnologiesandsour
ThementalhealthmovementintheUnitedStatesbeganwithaperiodofconsiderableenlightenment.DorotheaDixwasshockedtof
Theeditorspenthours______everysinglepageofthatthicknovel,lookingfortheslightesterror.
ThreeEnglishdictionariespublishedrecentlyalllayclaimtopossessinga"new"feature.TheBBCEnglishDictionary,contains
Afterthedisasterofflood,peoplealloverthevillagemade______efforttorebuildtheirhome.
Scientistsaresearchingforwaystodestroynuclearweaponsinspace—tomakenuclearweaponspowerlessandnolongeruseful.Th
随机试题
监事会的职权有哪几个方面?
国际品牌设计遵循的原则包括()
患者,女,30岁。牙龈易出血2个月。检查:全口牙龈色红、松软光亮,右下尖牙与侧切牙间的龈乳头肥大成瘤样,鲜红色,有蒂。为了明确诊断,最应注意询问的是()
保本基金的特点不包括()。
因B公司未履行经济合同,给A公司造成经济损失200万元,A公司要求B公司赔偿损失200万元,但B公司未予以同意。A公司遂于本年11月10日向法院提起诉讼,至12月31日,法院尚未做出判决。A公司预计很可能将胜诉,可获得200万元的赔偿金额的可能性为30%
南海公司计划用新设备替换旧设备。旧设备预计尚可使用5年,目前变现净收入为60000元。新设备投资额为150000元,预计使用5年。至第5年末,新、旧设备的预计残值假设分别为10000元和6000元(各残值与税法的规定相同)。使用新设备可使企业在未来5年
“主人下马客在船”翻译正确的是()。
与_______共同构成中国诗歌传统源头的《楚辞》,主要作者是因谗去国、被流放到蛮荒之地的屈原,他用“_______”这一著名诗句,表现了岁月蹉跎、时不我待的恐惧。文中画横线部分应依次填入()。
阐述中世纪大学对西方近代文明的影响。
设f(x)在[1,2]上连续,在(1,2)内可导,且f’(x)≠0,证明:存在ξ,η,ζ∈(1,2),使得
最新回复
(
0
)