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
50
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
Ifound________hardtoconcentrate.A、thisB、thatC、itD、whatC我发觉很难集中精神。考查it充当
下列哪种疾病可引起先昏迷后发热A.败血症 B.脑出血 C.流行性出血热 D
新修订的《中华人民共和国义务教育法》规定,凡年满()周岁的儿童,其父母或者
下列选项中最符合所给图形规律的是: A.如上图所示 B.如上图所示 C.如
下列各项中,不符合内部牵制的要求的是()。A、出纳人员管票据 B、出纳人员
下列行为中,没有违反《中华人民共和国妇女权益保障法》的是:A.某单位辞退了怀孕
在没有外在压力的条件下,个体受他人的影响而仿照他人,使自己与他人相同或相似的现象
根据《房屋建筑和市政基础设施工程施工图设计文件审查管理办法》,施工图设计文件的审
费用综合单价即单价中综合了人、料、机费用,企业管理费,规费,利润和税金等,以各分
项目人力资源管理控制的内容包括()。A.人力资源的选择 B.编制人力资源需求计
最新回复
(
0
)