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
The ostrich, the largest bird in the world at present, lives in the drier regions of Africa outside the actual deserts.Because o
The ostrich, the largest bird in the world at present, lives in the drier regions of Africa outside the actual deserts.Because o
admin
2012-01-19
35
问题
The ostrich, the largest bird in the world at present, lives in the drier regions of Africa outside the actual deserts.Because of its very long,powerful legs and the floating effect of its extended wings,it is able to run at great speed over considerable distances.
The female ostrich normally produces about twenty eggs every rainy season. When the female ostrich begins to lay her eggs, however, she does not begin in her own nest.Instead she goes off in search of the nests of neighboring females and lays two or three eggs in each of them.By the time she has laid eight or nine eggs,she returns and lays the rest in her own nest.
Because of the size of the eggs, the female ostrich cannot lay more than one every two days,so it takes her three weeks to finish laying in her own nest.During that period, she spends a lot of time away from her nest looking for food.And while she is off her nest, other females visit it to lay their eggs amongst hers.By the time she is ready to sit on the eggs to hatch them, there could be up to thirty eggs in her nest, over half of which are not her own.
The female ostrich can comfortably cover only about twenty eggs when she is sitting on the nest, so before settling down she pushes the surplus ten or so eggs out of the nest.The rejected eggs, however, never include any of her own.Each female is remarkably consistent in the size and shape of the eggs she produces, so it is not difficult for her to distinguish her own from those of strangers.
Of all the eggs laid by a colony of ostriches, only a very small number hatch into young birds.There are times when nests are left unprotected, for there are too few males to sit on all the nests at night.Thus there are ample opportunities for their natural enemies to raid the nests and eat the eggs.In fact,nearly 80% of the nests are destroyed.But even if a particular female’s nest suffers this fate, there is a good chance that one or two of her eggs will be hatched in the nest of one of her neighbors.
We learn from the text that an ostrich can go a long distance at high speed as
选项
A、it is a special kind of bird
B、it lives in large desert areas
C、it has special wings and legs
D、it is the largest bird in the world
答案
C
解析
细节题。题干中的as表示原因,因此本题提问鸵鸟能长距离快速奔跑 的原因。第一段的最后一句话“Because of its very long, powerful legs and the floating effect of its extended wings,it is able to run at great speed over considerable distances.”表明,凶为它的腿又长又有力,加上展开的翅膀具 有一定的浮力,鸵鸟可以极快的速度长距离奔跑,故选[C] 。
转载请注明原文地址:https://jikaoti.com/ti/WnWsFFFM
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Therewasonethoughtthatairpollutionaffectedonlytheareaimmediatelyaroundlargecitieswithfactoriesandheavyautom
GenerationsofAmericanshavebeenbrought【C1】______tobelievethatagoodbreakfastisimportantforhealth.Eatingbreakfasta
Whatarethesepeopleplanningtodo?
Theworldhasdevelopedintoaworldofcities.Withthecurrentrateofurbangrowth(3.8%intileThirdWorld),themajorpar
WerecentlysailedwithourresearchshipthroughtheRedSeatotheIndianOceanwherewedidresearchworkforaboutayear.O
LindaMyhusbandweighed275pounds.Heusedtoskipbreakfast,andhedidn’teatallthatmuchfordinner.SoIoncewonder
Stinkingbusesjamthecrowdedstreet.Driversshootatoneanotherandhonktheirhorns.Smoghurtstheeyesandchokesthesen
Stinkingbusesjamthecrowdedstreet.Driversshootatoneanotherandhonktheirhorns.Smoghurtstheeyesandchokesthesen
Therearevariouswaysinwhichindividualeconomicunitscaninteractwithoneanother.Threebasicwaysmaybedescribedasma
Thisstorybeganabout10yearsago.Iwascomingoutofaverybadmarriage.Forsevenlongyearsmyhusbandspenthiseverywa
随机试题
测定水的色度时,需要以白纸为衬底,使光线从顶部向下透过比色管,然后观察。
人体正常的血压范围是
组织设计的基本要点是( )。
逆向物流过程中对于各种回收物料的处理会增加企业的总物流成本,所以逆向物流管理应注意遵循()。
国内外研究资料指出,影响青年人生价值观的因素主要有()。
小学语文课上.老师要求学生用“清澈”一词造句,学生甲站起来说:“村边小溪中的水很清澈。”老师点评道:“很好。”学生乙站起来说:“我家的小狗毛毛的眼神很清澈。”老师沉吟了一会儿,评点说:“说狗的眼神‘清澈’不合适,这个造句不贴切。”学生乙狐疑地坐下了。问题
世界上许多著名的城市都是沿河而建的。下列这组________城市、河流的组合是错误的。
InKualaLumpurcranesstretchoutwardamongthegleamingtowersinaperpetualconstructionboompoweredbyforeigninvestment.
能够实现从指定记录集里检索特定字段值的函数是()。
Geographyisthestudyoftherelationshipbetweenpeopleandtheland.Geographerscompareandcontrastvariousplacesonthee
最新回复
(
0
)