首页
登录
职称英语
[originaltext] How do the birds manage to find their way? There seems to be
[originaltext] How do the birds manage to find their way? There seems to be
游客
2023-07-24
51
管理
问题
How do the birds manage to find their way? There seems to be no single answer: (32)they use many methods. Some we are beginning to understand; and there may be some that depend on abilities we have not yet suspected. (33) Many birds certainly follow major geographical features. Migrants follow recognized land, fly over familiar sea and arrive at their summer homes.
But all birds cannot use such straightforward methods. An Arctic sea bird, for example, has to fly at least 3,000 kilometers across the Antarctic Ocean with no land to guide it. We know that some birds flying at night, (34) navigate by the star for on cloudy nights they tend to get lost.
Day-flying birds may use the sun. If they are to do so, they must (35) have a precise sense of time. Still others appear to be able to use the earth’s magnetic field as a guide. So it seems that many migrating birds must carry in their brains a clock, a compass and the memory of a map.
选项
A、They use many different methods.
B、All birds follow major geographical features.
C、All birds use their memory of a map.
D、We have no information about this.
答案
A
解析
根据经验,B、C两种说法过于绝对,很可能不属实,剩下A、D两项就比较容易辨别。此题的问题是:"How do the birds manage to find their way?"从听到的"They use many methods"可断定A为正确选项。
转载请注明原文地址:https://tihaiku.com/zcyy/2866238.html
相关试题推荐
WhatdotheAmericandoctorssayaboutbabies?[br][originaltext]Somepeop
WhatdotheAmericandoctorssayaboutbabies?[br][originaltext]Somepeop
WhatdotheAmericandoctorssayaboutbabies?[br][originaltext]Somepeop
Whatisthemainpurposeoftheman’svisitthisyear?[originaltext]W:Welcome
[originaltext]M:Excuseme,Madam.Youarenotsupposedtobehere.Thisareaisf
[originaltext]M:Excuseme,Madam.Youarenotsupposedtobehere.Thisareaisf
[originaltext]Humanbeingsenjoychallenges.Manyofthemlikephysicalcha
[originaltext]M:Honey,thebasketballgameisabouttostart.Andcouldyoubri
[originaltext]M:Honey,thebasketballgameisabouttostart.Andcouldyoubri
[originaltext]M:Honey,thebasketballgameisabouttostart.Andcouldyoubri
随机试题
Thepoundingrainbeganinthemiddleofthenight.ThepeopleofJackson,Ohio
HallmarkCardsInc.hasbeendescribedastheGeneralMotorsofemotion.Eac
OneoutoffivebridgesintheUnitedStatesisoutmoded.A、narrowB、obsoleteC、i
我的第一个先生就是我母亲。我已经说过使我认识“爱”字的是她。在我幼儿的时候,她是我的世界的中心。她很完满地体现了一个“爱”字。她使我知道人间的温暖;她使我知道
Readinginvolveslookingatgraphicsymbolsandformulatingmentallythesounds
使用核子密湿度仪测定土基或基层材料的压实密度及含水率时,打洞后用直接透射法所测定
泪滴形红细胞常见于以下哪种疾病A.巨幼细胞性贫血B.真性红细胞增多症C.缺铁性贫
城市规划对房地产使用管制的内容,主要包括( )。A、建筑高度 B、建筑结构
下列对建筑外立面的消防救援口的设置进行的检查结果,符合规范要求的是()。A.某建
为了合理有效的对基金资产估值,基金管理公司应出台哪些措施()。A:建立健全估值决
最新回复
(
0
)