首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Why don’t birds (71) lost on their long flights from one place to another? Scientists have puzzled over this (72) for many
Why don’t birds (71) lost on their long flights from one place to another? Scientists have puzzled over this (72) for many
admin
2010-02-05
15
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).
选项
A、guidance
B、direction
C、light
D、guide
答案
A
解析
guidance和guide同源,都是名词。但前者意为“引导、指导”,后者意为“导游”。
转载请注明原文地址:https://kaotiyun.com/show/QblK777K
本试题收录于:
大学英语三级A级题库大学英语三级分类
0
大学英语三级A级
大学英语三级
相关试题推荐
A、Watchanewmovie.B、Listentothemusic.C、Watchfootballgames.D、Goshoppingwithfriends.A对话中,女士询问男士发生了什么,男士回答说打算和朋友迈克去看新
Ifyoucouldn’tkeepthe(appoint)________,pleaseinformusasearlyaspossible.
Itwas________alongjourneythatwefeltverytiredwhenwearrivedthere.
I’mwritingtoapplyforthepositionofdirectorofresearchinyourorganization.
Ifyou’vebeenthinkingaboutgivingupyourjob,herearetworeasonsyoushouldchangeyourmind:Everyonehastostartsomewh
ItisestimatedthatthiscitywillcatchupwiththeinternationalcitieslikeShanghaiintwentyyears.
A、Thewomanhasgotawrongnumber.B、Themannolongerworksthere.C、DavidJeffersonisnotinatthemoment.D、Someoneelsew
NewRockwatchRoxClubmemberswillobtainaspecialfilewhenthey______.YoumayjoinbothRockwatchandWildlifeWatchclub
Adidas-SalomonAG,theGermanathletic-apparelmaker,reachedanagreementWednesdaytopurchaseU.S.rivalReebokInternational
A、SheisnowinShanghai.B、SheisnowinJapan.C、ShewishesshewereinShanghainow.D、ShewishesshewereinJapannow.A
随机试题
能诱导机体产生变态反应的是
A.生活事件分值100B.生活事件分值50C.生活事件分值11D.生活事件分值30E.生活事件分值70周某,40岁,妻子突遇车祸死亡,悲伤至极。其不幸遭遇若用霍尔姆斯和雷赫生活事件分值分析排位,应为
包括分洪口在内的河堤背水面以外临时贮存洪水的低洼地区及湖泊等称为()。
当计算机出现喇叭无故蜂鸣、尖叫、报警或演奏某种音乐时说明计算机一定感染了计算机病毒。()
文峰公司2008年发生亏损100万元,2009年实现税前会计利润600万元,其中包括国债利息收入50万元;在营业外支出中有税收滞纳金罚款70万元;所得税税率25%。则企业2009年的净利润为()万元。
A公司是一家国有控股公司,下辖有20多家子公司以及多个研究单位。2008年,该公司成功在上交所上市。A公司多年来一直致力于汽车领域发展,主要涉及家庭用小汽车,电动汽车,卡丁车,高尔夫车等,并且在此基础上又陆续开发了公共交通用车,地方上的很多XX专线都是由
“桃李不言,下自成蹊”这句话所体现的德育方法是()。
1,3,5,9,17,31,57,()
请简要解释以下段落中画线部分的知识点中国作为最大的发展中国家和环境大国,在国际环境舞台上扮演着重要角色。中国以积极的态度参加了全球环境外交活动并做出了应有的贡献,在国际环境与发展领域中发挥了建设性的作用。1972年,中国政府派团出席了在(1)斯德哥尔摩
Thegarden______waslinedwithwell-trimmedhedges.
最新回复
(
0
)