首页
登录
职称英语
Why don’t birds (71) lost on their long flights from one place to another?
Why don’t birds (71) lost on their long flights from one place to another?
游客
2023-09-26
55
管理
问题
Why don’t birds (71) lost on their long flights from one place to another? Scientists have puzzled over this (72) for many years. Now they are beginning to fill (73) the blanks.
Not long ago, experiments (74) that birds rely on the sun to guide them (75) daylight, hours. But what about birds (76) fly by night? Tests with artificial stars have proved that (77) night - flying birds are able to follow the stars in their long - distance (78) A dove had spent its lifetime in a cage and had never flown under a (79) sky. Yet it showed a(n) (80) ability to use the stars for guidance. The bird’s cage was placed under a (n) (81) star - filled sky. The bird tried to fly in the position as that (82) by his outdoor cousins. Any (83) in the position of the make believe stars caused a change (84) the direction of his flight.
(85) think that doves, when flying in daylight, use the sun for (86) . But the stars are (87) their principal means of navigation. What do they do when the stars are (88) by clouds? Apparently, they find their way by such landmarks as (89) ranges, coast lines, and river courses. But when it’s too dark to see (90) , the doves circle helplessly, unable to get their bearing(方位). [br]
选项
A、easily
B、undoubtedly
C、apparently
D、importantly
答案
C
解析
apparently意为“看来、似乎”。
转载请注明原文地址:https://tihaiku.com/zcyy/3046575.html
相关试题推荐
Heinsistedonpurchasinganotherhouse,whichhehadnousefor.A、他已经没有什么用处了,但还
Allofuscommunicatewithoneanothernonverbally,aswellaswithwords.Mo
Anotherculturalaspectofnonverbalcommunicationisonethatyoumightnot
ProfessorLeeissaid______anotherimportantdiscoveryinphysics.A、tomakeB、h
[originaltext]M:Itseemsthatwe’llhaveanotherfinedaytomorrow.Let’sgot
[originaltext]W:Mr.Long,canyoutransfermetoanotherdepartment?M:Why?G
[originaltext]W:Mr.Long,canyoutransfermetoanotherdepartment?M:Why?G
AnothervirtueAmericansrespectisperseverance.RememberAesop’sfableabou
Faces,likefingerprints,arenotthesameasoneanother.Didyoueverwond
Alllifeonourearthdepends,inonewayoranother,onthesun.Withoutits
随机试题
HealthCareandEpidemicsEveryonesuffersfromdiseasea
Thereisvirtuallynolimittohowonecanservecommunityinterests,froms
[originaltext]W:Whatsortofhoursdoyouwork,Steve?M:Well,Ihavetowork
下列关于可靠性的表述正确的是()。 A.产品功能越多越可靠 B.产品维修越
(2018年真题)下列关于商业银行业务的表述,正确的是()。A.商业银行可
A.调冲任 B.祛风湿 C.托疮毒 D.安胎 E.润肠通便锁阳除补肾阳、
( )承保各种类型的客机、货机、客货两用机以及从事各种专业用途的飞机。A.飞机
(2017年真题)2017年1月1日,某企业开始自行研究开发一套软件,研究阶
容积泵中,往复泵除了包括活塞泵外,还包括()A.隔膜泵 B.螺杆泵 C.罗
最新回复
(
0
)