首页
登录
职称英语
[originaltext] The sound of birds can be divided into 3 types including sing
[originaltext] The sound of birds can be divided into 3 types including sing
游客
2023-09-11
45
管理
问题
The sound of birds can be divided into 3 types including singing, crying and voice imitating. Singing is normally a continuous multi-syllable melody uttered by the birds under the control of sex hormone. Some sorts of singing are quite melodious and pleasant. During the breeding cycle, the changing and pleasant cries uttered by male birds are typical singings. Singing is an important way for a bird to defend its territories, to pronounce it has occupied a place and to warn other birds not to enter the area. The songs uttered by birds in singing are more different and complicated than their common cries, which mainly happen in the breeding cycle in spring and summer. Cries are not controlled by sex hormone and can be uttered by both male and female birds. Usually cries of birds are short and simple. But the cries of birds can mean a lot. They are used to communicate with one another and to inform one another about dangerous information. The cries of birds can express calling, warning, surprising and threatening. Sometimes it is very difficult to distinguish crying and singing. Generally speaking, cries are not affected by the change of seasons and can be uttered by all birds; Crying is an important way for birds to communicate with one another. Voice imitating means a bird is imitating the crying or voice of other birds. The biological meaning of voice imitating is not clear even now and it is highly probable that it will take a long time for people to discover the mystery.
选项
A、Singling, echoing and crying.
B、Singing, echoing and voice imitating.
C、Echoing, crying and voice imitating.
D、Singing, crying and voice imitating.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3005412.html
相关试题推荐
[originaltext]Afableisashortstorywhichisnottrue.Itisastorytha
[originaltext]Afableisashortstorywhichisnottrue.Itisastorytha
[originaltext]M:Hey!Jenny,doyouwanttolivealongerlife?W:Why?Ofcour
[originaltext]M:Hey!Jenny,doyouwanttolivealongerlife?W:Why?Ofcour
[originaltext]M:Hey!Jenny,doyouwanttolivealongerlife?W:Why?Ofcour
[originaltext]W:Hi,Mark!How’sitgoing?M:Well,notsogreat.W:What’swro
[originaltext]M:Hello.W:Hello,Sam.ThisisPaulaHanson.Sorrytobotheryo
[originaltext]M:Hello.W:Hello,Sam.ThisisPaulaHanson.Sorrytobotheryo
[originaltext]M:Hello.W:Hello,Sam.ThisisPaulaHanson.Sorrytobotheryo
[originaltext]W:Hi,Bob.IheardaboutyouraccidentbutIdidn’tthinkitwou
随机试题
OscarWildesaidthatworkistherefugeofpeoplewhohavenothingbetter
PASSAGEONE[br]WhydidtheDAthinkAndrewDufresne’smurderwasamuchcolder
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicand
U.S.ratesofdiseaseandsomecancers,【B1】______ofthebreast,areamongth
20多年来,我国出版物发行业的改革和发展取得了重要成绩,总结起来主要有(
建筑构造(外墙外保温构造) 任务描述: 第二题图1为多层建筑外墙外保
优质碳素结构钢磷硫含量限制较严,一般均不得大于()。A.0.02% B.0.0
按外科辨痛,"痛而酸胀,肢体沉重,按之出现可凹性水肿或见糜烂流滋"。其疼痛原因是
在教育方面,中国台湾理财顾问认证协会要求学员完成经培训机构认可的大学教育。(
某新建一级公路工程第二标段里程桩号为K15+300~K24+150,其中K2
最新回复
(
0
)