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
2023-09-25
36
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/3044187.html
相关试题推荐
[originaltext]WheredidthemangethisairticketforhistriptoShanghai?[/o
[originaltext]M:Haveyoueverheardofamachinethatsellstickets?W:Yes.I
[originaltext]W:Isthereanythingelseyouwanttobuy?M:Yes.I’dliketobu
[originaltext]Woman:Excuseme,howmuchisthisredskirt?Man:45dollars.Wo
[originaltext]Woman:Whatterribleweather!Man:Itsurelyis!Ithasbeenrain
[originaltext]Man:Nowlet’shavesometea.Howdoyoulikeyourtea,Mrs.Whit
Whowillbethepossiblereaderofthepassage?[br]Whichofthefollowingstat
Whowillbethepossiblereaderofthepassage?[br]Thepassageismostlikely
[originaltext]Weareawell-knowninternationalmanufacturer,basedinthe
Atleast______.[originaltext]Howmanyforeignlanguagesshouldtheapplicantsb
随机试题
Agloomyafternoonsawmetakingmyroutinepaththroughthatconstructions
TheGuidfordFour,freedlastweekafterspending15yearsinprisonforcri
设A,B是两个随机事件,且P(A)+P(B)=0.8,P(A+B)=0.6,则=
T接线器主要由()组成。A.话音存储器SM B.必要的输出电路 C.必要的接
任何防水等级的地下室,防水工程主体均应选用下列哪一种防水措施?( )A.防水卷
患者,男,60岁。患慢性活动性肝炎5年,有青霉素G过敏史。因高热、咳嗽、咳大量脓
6、7、18、23、38、() A.47B.53C.62D.76
下列除哪项外。均符合问诊的要求A.态度和蔼,言语亲切 B.要将患者陈述的内容去
老李一家户籍都在河南,但常年在北京做小店生意,一直住在北京。老李儿子突发重大疾病
关于法律效力的理解,错误的是A.法律效力是指法律的适用范围 B.法律效力的层次
最新回复
(
0
)