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
A mysterious phenomenon is the ability of over-water migrants to travel on course. Birds, bees, and other species can keep track
A mysterious phenomenon is the ability of over-water migrants to travel on course. Birds, bees, and other species can keep track
admin
2010-06-18
64
问题
A mysterious phenomenon is the ability of over-water migrants to travel on course. Birds, bees, and other species can keep track of time without any sensory cues from the outside world, and such "biological clocks" clearly contribute to their "compass sense". For example, they can use the position of the sun or stars, along with the time of day, to find north. But compass sense alone cannot explain how birds navigate the ocean: after a flock traveling east is blown far south by a storm, it will assume the proper northeasterly course to compensate. Perhaps, some scientists thought, migrants determine their geographic position on Earth by celestial navigation, almost as human navigators use stars and planets, but this would demand of the animals a fantastic map sense. Researchers now know that some species have a magnetic sense, which might allow migrants to determine their geographic location by detecting variation in the strength of the Earth’s magnetic field.
It can be inferred from the passage that if the flock of birds were navigating by compass sense alone, they would, after the storm, fly______.
选项
A、east
B、north
C、northwest
D、south
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/RmlO777K
0
专业英语八级
相关试题推荐
InAustralia,reportsaboutAboriginalpeopleoftenmakefordepressingreading.Justafewdaysago,thelatestofficialreport
InAustralia,reportsaboutAboriginalpeopleoftenmakefordepressingreading.Justafewdaysago,thelatestofficialreport
Fromitsbirth,threepowerfulimageshavecolouredideasofwhattheUnitedStateswasandwhatitstoodfor.Onewas"acityo
TheAgencyforInternationalDevelopmentisa______organization.AccordingtoNDS’sstatistics,thenumberofbabiestheaver
Nancybecameataxidriverbecause
Nancybecameataxidriverbecause
1 Aboutthetimethatschoolsandothersquitereasonablybecameinterestedinseeingtoitthatallchildren,whatevertheirb
Allhisnovelsrevealthat,astimewenton,MarkTwainbecameincreasingly______.
随机试题
依次填入下面一段文字横线处的语句,衔接最恰当的一组是()。“开卷有益"是说打开书就一定会有收获。________。________,________,________,________。________。如果你勤读书、读好书,你就一定
关于正常血细胞糖原染色,下列哪项是正确的
肝硬化时肝脏大小、形态的变化,下面描述错误的是
关于土的回弹模量,说法正确的是:()
下列部位中,管道环焊缝可以设置的部位是:()
某大型房屋建筑工程,不能担任项目负责人的有()建造师。
下列有关资金结构的表述中,正确的有()。
阅读下面的文言文,回答问题。壅塞亡国之主不可以直言。不可以直言,则过无道闻,而善无自至矣。无自至则壅。秦缪公时,戎强大。秦缪公遗之
1947年,苏联一些农村的干部和群众,为了调动广大群众生产积极性,在管理制度方面进行改革,其主要措施是()。
凯利认为人们在归因时要检查的信息的维度包括
最新回复
(
0
)