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
医学
A、A primitive type of nest. B、An elevated nest. C、A typical cup-shaped nest. D、A nest of twigs and branches. A题目问的是小水鸟在停车场筑巢是为了什
A、A primitive type of nest. B、An elevated nest. C、A typical cup-shaped nest. D、A nest of twigs and branches. A题目问的是小水鸟在停车场筑巢是为了什
admin
2018-05-06
38
问题
Many egg-laying animals merely lay their eggs and leave. Turtles for instance, the eggs hatch on their own. The current theory about birds is that the earliest birds did just that when they were cold-blooded creatures living in warm places. (27) However when they became warm-blooded creatures living in cold places they had to remain on the eggs to keep them warm. The process we call incubation. For this they needed a place to nest. (28) Very likely the first nests were just primitive depressions scrape into the ground. Even now many species still lay eggs in this sort of crude nests. (29) In fact every spring a mother killdeer lays hers in some pebbles along the edge of the parking lot just outside this building. Primitive nests on the ground were fine for some birds (30) but others began to elevate their nests in branches perhaps to avoid predators. These early elevated nests were probably lose platforms of sticks and twigs—the types still built by os-preys and most Arians today. The latest evolvement in nest, the most recent version, so to speak, is the cup-shaped nest. This is the one we regard today as the typical bird’s nest, you know, like a robin’ s nest.
26.What is the main topic of the passage?
27.What evolutionary change in birds led to nest building?
28.According to the speaker,where were the first bird’s nests located?
29.What is the killdeer’s nest in parking lot an example of?
30.According to the speaker,what is a possible reason that birds began to build nests in trees?
选项
A、A primitive type of nest.
B、An elevated nest.
C、A typical cup-shaped nest.
D、A nest of twigs and branches.
答案
A
解析
题目问的是小水鸟在停车场筑巢是为了什么而举例的。由定位句可知,小水鸟的巢是原始的粗糙的巢的一种,故选A。
转载请注明原文地址:https://kaotiyun.com/show/7gT3777K
本试题收录于:
医学博士外语题库考研分类
0
医学博士外语
考研
相关试题推荐
肝体积明显缩小,外观黄绿色,表面呈结节状,光镜下见肝细胞大片坏死,同时可见肝细胞再生结节,明显淤胆,大量炎性细胞浸润,结节间纤维组织及小胆管明显增生,根据上述病变应诊断为
Itusedtobethatacorporation’scapitalconsistedoftangibleassetssuchasbuildings,machines,andfinishedgoods.But,
Ihadneverbeeninthepublicwardofahospitalbefore,anditwasmyfirstexperienceofdoctorswhohandleyouwithoutspeak
A、She’saninsuranceagent.B、She’saninsuranceclient.C、She’sabankclerk.D、She’sadriver.A对话中女士问男士是否需要collisioninsu
Theaveragecommercialbusinesscanshutdowninsuchanemergencybutahospitaldoesn’tdareforlivesare______.
AttheKyotoconferenceonglobalwarminginDecember1997,itbecameabundantlyclearhowcomplexithasbecometoworkoutint
A、Takeahistoryexam.B、Gotoanartexhibit.C、Meetsomeclassmates.D、Helpthemanwithhispainting.C从“Iwasjustonmyway
A、Itisanactofoverprotected.B、Itisaspecialcase-beesitting.C、Itisanactoftheimmunesystem.D、Itissneezing,red
Cancerisconsideredamoderndisease,thoughitwasnotunknowninancienttimes.(TheconditionwasnamedbytheGreeksfromth
CanceristhesecondleadingcauseofdeathintheUnitedStates,afterheartdisease.Inthepast,itwasoftenconsideredade
随机试题
范某的下列有关骨科病预防与治疗方面研究成果中,哪些可在我国申请专利?
A、Herlandlordwillnotgivebackthebook.B、Shehasabigfinefromtheschool.C、Herlandlorddidnotreturnthebook.D、She
一曝气沉砂池最大设计流量为2m3/s,最大设计流量时停留时间一般采取1~3min,设计中取2min,则该曝气沉砂池的总有效容积为()m3。
下列作品()是陕北民歌。
普贤菩萨手持如意棒,身骑六牙大象,人称“大行菩萨”,相传其道场在()。
ThefirstnavigationallightsintheNewWorldwereprobablylighthouseshungatharborentrances.Thefirstlighthousewasput
______asitwasatsuchatime,hisworkattractedmuchattention.
ThemostcommonlegendaboutthediscoveryofcoffeeisthatithappenedintheninthcenturyA.D.AgoatherderinEthiopiana
Whydidtheelephantsitonthecar?Becausetheelephanttookittobehis_____________.
Themedicalworldisgraduallyrealizingthatthequalityoftheenvironmentinhospitalsmayplayasignificantroleinthepro
最新回复
(
0
)