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
2024-02-25
30
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、To fly one following another.
B、To fly without stopping.
C、To use land features as the guide.
D、To take one route only.
答案
C
解析
此题的问题是:"What is the most straightforward method for the birds to use to find their way?"由于文中根本未提到A、B、D,则可用排除法直接选定C为答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3482503.html
相关试题推荐
[originaltext]Doyouhavetroublesleepingatnight?Thenmaybethisisfor
[originaltext]W:WhatdoyouthinkIshouldweartothepartytonight?M:Oh,I
[originaltext]W:WhatdoyouthinkIshouldweartothepartytonight?M:Oh,I
[originaltext]W:WhatdoyouthinkIshouldweartothepartytonight?M:Oh,I
[originaltext]W:WhatdoyouthinkIshouldweartothepartytonight?M:Oh,I
[originaltext]W:WhatdoyouthinkIshouldweartothepartytonight?M:Oh,I
[originaltext]Mostantsarehardworkersandoftenworkfromsixo’clockin
[originaltext]Mostantsarehardworkersandoftenworkfromsixo’clockin
[originaltext]W:Dr.Gary’sOffice.M:Yes,I’dliketomakeanappointmentto
[originaltext]W:Dr.Gary’sOffice.M:Yes,I’dliketomakeanappointmentto
随机试题
[originaltext]M:OK,soifyou’rereadytotaketheplunge,ifyouwannagetou
[originaltext]Americanssufferfromanoverdoseofwork.Regardlessofwhot
[originaltext]M:Hi,Rose,youaresoabsorbedthatyoudidn’tevenknowIcame
WinstonChurchilloncesaid,"Itisnousedoingwhatyoulike;youhavegot
Theauthorisprimarilyaddressing______.[br]Teenagersdonotwanttheirpare
ThefearofFridaythe13thstemsfromtwoseparatefears--thefearofthen
某生物碱的碱性强,则其()。A.pKa小B.pKb大C.Ka大D.Kb小E.p
装配式桥梁吊装时构件的吊环应顺直,吊绳与起吊构件的交角小于( )时,应设置吊架或
下列主体中,属于社会保险法律关系主体的有( )。A.用人单位 B.劳动者
对于地基柔弱土层厚、荷载大和建筑面积不太大的一些重要高层建筑,最常采用的基础构造
最新回复
(
0
)