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
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
admin
2022-04-22
24
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 coldblooded creatures living in warm places. 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. 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. In fact every spring a mother killdeer lays her eggs in some pebbles along the edge of the parking lot just outside this building. Primitive nests on the ground were fine for some birds but others began to elevate their nests in branches perhaps to avoid predators.
Q19: What evolutionary change in birds led to nest building?
Q20: According to the speaker, where were the first bird’ s nests located?
Q21: What is the killdeer’ s nest in parking lot an example of?
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/DQH3777K
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
A.左心室向心性肥大B.颗粒性固缩肾C.两者皆有D.两者皆无风湿性心脏病主动脉瓣狭窄
对下列肺炎选用抗菌药物,哪项是正确的
社区获得性肺炎最常见的类型是
RNA中所含碱基通常有
Cultureshockmightbecalledanoccupationaldiseaseofpeoplewhohavebeensuddenlytransplantedabroad.Likemostailments,
Folkwisdomholdsthattheblindcanhearbetterthanpeoplewithsight.Scientistshaveanewreasontobelieveit.Researc
InMr.Allen’shighschoolclass,allthestudentshaveto"getmarried".However,theweddingceremoniesarenotrealonesbut
A、He’llgotoseeMr.Whiteat10:30tomorrow.B、He’dliketomakeanearlierappointment.C、He’dliketocanceltheappointment
Patientswhoseeyeshavesufferedheatorchemicalburnstypicallyexperienceseveredamagetothecornea—thethin,transparent
随机试题
Everyoneknowsthatthefirstruleofdrivingisnevertakingyoureyesofftheroad.Teendrivers【C1】________beingcareful,bu
A.利多卡因B.奎尼丁C.普罗帕酮D.普萘洛尔E.胺碘酮可阻滞钠、钾、钙通道
暂时性牙关紧闭常发生于
依照有关法律规定,设立股份有限公司,董事会应当于创立大会结束后30日内向工商行政管理机关申请设立登记。工商行政管理机关收到提交的全部文件后,发给《公司登记受理通知书》,自发出《公司登记受理通知书》之日起30日内,作出核准登记或者不予登记的决定。工商行政管理
《关于支持循环经济发展的投融资政策措施意见的通知》提出,积极支持符合条件的循环经济项目申请使用国际金融组织贷款和外国政府贷款。支持、鼓励循环经济项目申请()发展机制项目。
下列保税加工货物内销时,如需征收税款,同时要征收缓税利息的是:
关于世界遗产保护,下列说法正确的是()。
孔子所说的“其身正,不令而行。其身不正,虽令不止”,从教师的角度可以理解为()。
试论社会主义法与社会主义市场经济的关系。
=_____(其中a为常数).
最新回复
(
0
)