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
64
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 a map and the memory of location.
B、They use the sun and the stars.
C、They use a map and the earth’s magnetic field.
D、They have precise sense of time or may use the earth’s magnetic field.
答案
D
解析
此题的问题是:"How do day-flying birds find their way?"根据"day-flying"可排除B项。整篇文章讲的是鸟如何确定飞行方向,找到迁徙的正确路线。而鸟是不可能用地图的,文中的"the memory of a map"指的是对地貌的记忆,而非真的地图。只有D项最符合要求。"Day-flying birds may use the sun. If they do so, they must have a precise sense of time. Still others appear to be able to use the earth’s magnetic field"。
转载请注明原文地址:https://tihaiku.com/zcyy/3482505.html
相关试题推荐
[originaltext]Doyouhavetroublesleepingatnight?Thenmaybethisisfor
[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
随机试题
Thecompanies’lastfilmtogether,"TheCars",isslatedforreleasein2005.
In1977,thegroupWomenOfficeWorkersheldacontestforsecretaries,invi
Largecompaniesneedawaytoreachthesavingsofthepublicatlarge.The
现浇预应力混凝土盖梁施工应控制好()四个环节。A.测量 B.支架搭设 C.
A.阴道前壁修补术 B.Manchester手术 C.经阴道全子宫及阴道前后
下列关于急性甲型肝炎的治疗,最主要的是A.休息 B.调节免疫 C.抗病毒
A.瓜蒌子 B.金樱子 C.五味子 D.牵牛子 E.车前子医师处方写药物
客户王某收到期货公司追加保证金通知后,表示将尽快补足保证金。第二天,王某未能按规
下列各项中,不属于存货成本的是()。A.存货的加工成本 B.使存货达到可
路基施工中,随着路基填筑高度的增加,沉降杆和隔离管不断接高并始终高出路基面,一般
最新回复
(
0
)