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
41
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
three times
解析
本题询问与生活在四百万年至二百万年前的早期祖先相比,现在人类的大脑有多大。根据such as those that lived four million to two million years ago,our brains are three times as large可知,与那些生活在四百万年至二百万年前的早期人类相比,现在人类的大脑是他们的三倍大。
转载请注明原文地址:https://tihaiku.com/zcyy/3660451.html
相关试题推荐
Whatdoesthispassagetellus?Ittellsuswhyourbrains______.[br][origina
Whatdoesthispassagetellus?Ittellsuswhyourbrains______.[br][origina
Whatdoesthispassagetellus?Ittellsuswhyourbrains______.[br][origina
[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]Whydoestheautho
Whatwasthepurposeoftheauthortowritethepassage?[br]Whichofthefollo
Whatwasthepurposeoftheauthortowritethepassage?[br]Howmuchfull-time
随机试题
TheuniquenessoftheJapanesecharacteristheresultoftwoseeminglycont
Hetook______smokinganddrinkingwhenhewasveryyoung.A、inB、onC、offD、to
Whatpromptedthisconversation?[br][originaltext]W.What’stheproblem?M:I
A、Beingeasy-going.B、Beinggenerous.C、Beingorganized.D、Beingselfless.A本题考查
证明:若矩阵A可逆,则其逆矩阵必然唯一.
我国煤炭储量占世界比重是()A.8% B.10% C.11% D.
国际评估准则的资产准则包括()。A.国际评估准则200——企业及企业权益
郑先生与郑女士1986年登记结婚,婚后生有一子涛涛,2009年涛涛13岁时二人因
为了保证审计工作有序、高效地完成审计任务,达到审计目标,需要对审计工作进行科学的
以下利润表的列示不正确的是()。A:利润表中应当对费用按照功能分类,分为从事经营
最新回复
(
0
)