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、Migrating birds follow a certain smell or scent. B、Animals migrate by following changes in temperature. C、Animals find their w
A、Migrating birds follow a certain smell or scent. B、Animals migrate by following changes in temperature. C、Animals find their w
admin
2013-04-15
55
问题
One of the greatest mysteries of nature is the instinct to migrate. Every year, millions of creatures feel the need to migrate and most people have seen the arrival or departure of migrating flocks of birds. In England, for example, we always know when Autumn is coming, because flocks of swallows sit on the telegraph wires. Migration is not only seen in birds but also in reptiles, for example, turtles, frogs and toads. Insects, such as locusts and butterflies; fish, such as eel, salmon and tunas and mammals, such as reindeer, seals, lemmings, whales and bats. Many of these creatures can find their way over long distances. And how they do it is a mystery and a wonder to everyone, especially for those of us who have difficulty even reading a map covering 100 miles. There are several suggestions about how they navigate. Firstly, it is suggested, they navigate by using stars and planets for guidance. Secondly, some people think that these migrating mammals find their way by following the pole of the earth’s magnetic field. Thirdly some people think that migrating birds, insects and animals follow a certain smell or scent. Fourthly, another group of people believe that animals migrate by recognizing geographical features. Fifthly, some people think that animals migrate by following changes in temperature. And finally, there are people who suppose they migrate by following sound.
选项
A、Migrating birds follow a certain smell or scent.
B、Animals migrate by following changes in temperature.
C、Animals find their way by recognizing geographical features.
D、Migrating mammals use the rising and falling of tidal waves.
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/SOI7777K
0
大学英语六级
相关试题推荐
Thetragedycouldhavebeen______ifthecrewhadfollowedsafetyprocedures.
TheStudentMovementwas______forthetimebeing,butifnothingchanges,somethingwillhappenagainorevenwithamuchgre
WetendtothinkofthedecadesimmediatelyfollowingWorldWarIIasatimeofprosperityandgrowth,withsoldiersreturningh
Talkingofcampaignsbyourcharitytophaseoutthekeepingofanimalsincaptivity,DartmoorZooownerBenMeesays,"Actually
A、Salmonandtunas.B、Locustsandbutterflies.C、Antsandbees.D、Whalesandbats.B
A、Theimpactofcommercialwhaling.B、WhyJapanandNorwaycontinuetohuntwhales.C、TheinactionoftheIWC.D、Theimmorality
A、Shewasveryluckytoseemanywhales.B、Shedidn’tgotothewhale-watchingtrip.C、Shedidn’tseeawhaleonherwhale-watch
随机试题
企业出售无形资产的净收入,会计上应确认为()。
下列哪一项不是引起左房增大的原因
下列哪项属于小儿出生时不存在,以后出现并持续终身的神经反射
患者,男,52岁。平素身体虚弱,今日突然昏仆,不省人事,目合口张,手撒肢冷,汗多,小便自遗,肢体软瘫,舌痿,脉细弱。治疗应首选的方剂是
下列关于交易所席位管理的说法中,正确的有( )。
以下关于外资股的说法,正确的是()。
在金银复本位制下,实际价值高于名义价值的货币被收藏、熔化而退出流通,实际价值低于名义价值的货币则充斥市场,这种现象称作()。
根据《中华人民共和国刑法》第二百六十三条的规定,持枪抢劫是抢劫罪的加重理由,应处10年以上有期徒刑、无期徒刑或者死刑。冯某抢劫了某出租车司机的钱财。法院在审理过程中确认,冯某抢劫时使用的是仿真手枪,因此,法官在对冯某如何量刑上发生了争议。法官甲认为,持仿真
锦上添花:雪中送炭与()在内在逻辑关系上最为相似。
Whydidthefoxfallintothefiver?HowdidthesheepfeelWhenshesawthefoxintheriver?
最新回复
(
0
)