首页
登录
职称英语
[originaltext] One of the greatest mysteries of nature is the instinct to mi
[originaltext] One of the greatest mysteries of nature is the instinct to mi
游客
2023-09-02
49
管理
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、The weather gets hotter.
B、Telegraph wires stand still.
C、Swallows sit on telegraph wires.
D、People find the mystery of migration
答案
C
解析
转载请注明原文地址:http://tihaiku.com/zcyy/2977781.html
相关试题推荐
[originaltext]TelevisionorTVisamodemwonderofelectronics.Itbrings
[originaltext]TelevisionorTVisamodemwonderofelectronics.Itbrings
[originaltext]TelevisionorTVisamodemwonderofelectronics.Itbrings
[originaltext]Americanscientistsaredevelopingmapsthatcanidentifyare
[originaltext]W:Excuseme.Doyoulivehere?M:Yes,I’velivedhereinEdinbu
[originaltext]W:Excuseme.Doyoulivehere?M:Yes,I’velivedhereinEdinbu
[originaltext]W:Excuseme.Doyoulivehere?M:Yes,I’velivedhereinEdinbu
[originaltext]W:Excuseme,Inoticedyou’rereadinganelectronicsmagazine.D
[originaltext]W:Excuseme,Inoticedyou’rereadinganelectronicsmagazine.D
[originaltext](33)Ourenvironmentisbeingpollutedfasterthannaturean
随机试题
[originaltext]6.Therewasnonewsfromthefrontyet,neverthelesswewenton
[originaltext]W:Youcaneithergowithmeoryoucanstayhereattheapartmen
根据马克思利率决定理论,决定利率的基本因素中,最基本的是()。A.平均利润率
在正常使用情况下,装修工程的最低保修期限为()。A.1年 B.2年 C.5
肝癌患者已发生转移,其最早、最常见的转移方式是A.种植转移 B.淋巴转移 C
端子箱及检修电源箱验收细则规定,端子箱内每个接线端子不得超过()根接线,不同
约翰喜欢攀岩和射击运动。他的大学同学中没有一个既喜欢攀岩,又喜欢射击,但他所有的
根据品牌的影响范围,饭店品牌可分为( )。A.领导品牌 B.国家品牌 C.
对于一般物业投资项目,偿债备付率应该大于()A:12B:1.2C:2D:0
基础心理学是研究()。 (A)正常成人心理现象的心理学基础学科 (B
最新回复
(
0
)