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
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
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
[originaltext]W:ThereisnothingIlikemorethanagoodmysterynovelwhenI’
Tourismreallyisabigbusinessthesedays.It’s【B1】______.Itinvolveshot
Amajoringredienttotakingthepainoutofastressfuldayatworkisasu
Haveyoueverwonderedwhatourfutureislike?Practicallyallpeople【C1】__
Ourconclusionisbasedonallavailableknowledge,___________(而不是基于猜测和想像).rathe
设Z=Z(x,Y)是由方程x+y3+z+e2=1确定的函数,求dz
建筑起重机械出租单位应履行的基本职责有()。A.购置、租赁、使用的建筑起重机械应
某男,30岁,要求固定修复,检查:缺失,缺隙较小,叩(-),但牙合龈距较小。桥体
A.输卵管妊娠破裂 B.卵巢黄体破裂 C.卵巢卵泡破裂 D.子宫肌瘤红色变
周围型类风湿性关节炎的骨骼早期X线改变常规最佳的投照位置是()A.双手
最新回复
(
0
)