首页
登录
职称英语
What does this passage tell us? It tells us why our brains______. [originaltext]
What does this passage tell us? It tells us why our brains______. [originaltext]
游客
2023-09-25
42
管理
问题
What does this passage tell us? It tells us why our brains______.
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
got so big
解析
本题询问这篇文章讲的是什么。根据短文开头部分scientists have wondered how our brains got so big可知,科学家们一直在探索人类的大脑是怎么变得这么大的。
转载请注明原文地址:https://tihaiku.com/zcyy/3044184.html
相关试题推荐
WhatisPeter?Heis______[originaltext]WhatisPeter?[/originaltext]ahouse
WhatisAnn’sJob?Annis______[originaltext]Annisapilot,andsheflies
[originaltext]W:Hello,UtopiaProducts.JennyButlerspeaking.HowcanIhelp
[originaltext]Howdidthemansendthesamples?[/originaltext]A、Bypost.B、Byt
[originaltext]M:Hi,Lucy!Haven’tseenyouforages!Whatareyoudoingnow?W
[originaltext]W:Wouldyouliketoopenyourownbusiness?M:Iwouldn’tminda
[originaltext]M:Whereareyoulivingnow?Iwenttoseeyouatyouroldapartm
Thispassagemightbetakenfrom[br]Whichdoyouthinkwouldbethebesttitle
Thispassagemightbetakenfrom[br]WhichofthefollowingisNOTmentionedas
Thispassagemightbetakenfrom[br]Thepassagesuggeststhat______.A、acciden
随机试题
[originaltext]TheUnitedNationsjustwrappedupaneventfocusedongender
某酒店一名客人被困在电梯中,情绪激动地向前台打电话求助,但是酒店维修人员无法排除
直流稳压电源中的电路工作的先后顺序是()A.滤波、稳压再整流 B.整流、滤波再
()istheprocessofidentifyingindivi
下列疾病,常引起心前区隆起的是()A.冠心病 B.肺心病 C.先天性心
适合用于正虚邪实病证的治疗原则是A.祛邪 B.扶正与祛邪兼用 C.先祛邪后扶
施工竣工验收阶段建设监理工作的主要内容不包括()。A:受理单位工程竣工验收报告
绒毛膜癌患者的处理原则为A.放疗 B.同位素治疗 C.子宫切除 D.以化疗
桩的直径一般为根直径的A.1/4 B.1/3 C.2/3 D.1/
()原则要求政府采购各方都不得有欺骗背信的行为,以善意的方式行使权利,尊重他人利
最新回复
(
0
)