首页
登录
职称英语
What does this passage tell us? It tells us why our brains______. [br] [origina
What does this passage tell us? It tells us why our brains______. [br] [origina
游客
2024-07-03
47
管理
问题
What does this passage tell us? It tells us why our brains______. [br]
Human brains are about three times as large as those of our early ancestors that lived four million to two million years ago, and for years, (11)scientists have wondered how our brains got so big. (12) A new study suggests social competition could be behind the increase in brain size.
Compared to almost all other animals, human brains are larger as a percentage of body weight. (13) And since the emergence of the first species about two million years ago, the human brain has doubled in size. And when compared to earlier ancestors, (14)such as those that lived four million to two million years ago, our brains are three times as large. For years, scientists have wondered what could account for this increase.
The three major theories have focused on climate change, the demand of ecology, and social competition.
选项
答案
Social competition
解析
本题询问根据新研究,什么因素导致人类大脑的增长。根据Anew study suggests social competition could be behind the increase in brain size可知,社会竞争可能是大脑变大的一个原因。
转载请注明原文地址:https://tihaiku.com/zcyy/3660449.html
相关试题推荐
Whatdoesthispassagetellus?Ittellsuswhyourbrains______.[br][origina
Whatdoesthispassagetellus?Ittellsuswhyourbrains______.[br][origina
Whatdoesthispassagetellus?Ittellsuswhyourbrains______.[originaltext]
[originaltext]W:I’dliketo(8)sendthisparceltoAmerica.M:OK.(8)Pleasep
[originaltext]W:AreyougoingtoCassie’sbirthdaypartyonSaturdayevening?
[originaltext]M:Howaboutthewhiteoneontheleft?Itscheaper.W:Theblu
[originaltext]M:Howaboutthewhiteoneontheleft?Itscheaper.W:Theblu
Whatwasthepurposeoftheauthortowritethepassage?[br]ThementionofBri
Whatwasthepurposeoftheauthortowritethepassage?[br]Whichofthefollo
Whatwasthepurposeoftheauthortowritethepassage?[br]Howmuchfull-time
随机试题
SarahDavislivesinDalton,Australia,andherparentsownasheepfarmthe
[originaltext]W:Ireallyhopetheviewfromthebalconyisgood.M:Noproblem
[originaltext]Accordingtoasurveyonreadingconductedin2001bytheUS
几千年的中国文化充实着中国梦,同时,过去三十几年的改革开放也激励着中国梦。中国梦最显著的特征是包容性和双赢合作。这些也是使中国梦扩大其全球影响范围和被其
在Windows命令行窗口中使用( )命令可以查看本机各个接口的DHCP服务是
2001年—2008年某班级50名学生期末考试成绩统计图 该班级60分以
按照征收管理的分工体系,税收分为工商税类、所得税类。()
影响尿液颜色最大的因素是A.尿糖B.尿pHC.尿卟啉D.尿色素E.尿量
下面属于大型工程的是( )。 A、交通安全设施单项合同额≥500万元 B
根据香港联交所《创业板上市规则》,内地企业在香港创业板上市时股东人数要求为不少于
最新回复
(
0
)