首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
What does this passage tell us? It tells us why our brains______.
What does this passage tell us? It tells us why our brains______.
admin
2012-04-01
42
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
demand of ecology
解析
本题询问三种理论分别聚焦于什么。根据短文结尾部分The three major theories have focused on climate change,the demand of ecology,and social competition可知,三种理论分别聚焦于气候变化、生态需求和社会竞争。
转载请注明原文地址:https://kaotiyun.com/show/MrlK777K
本试题收录于:
大学英语三级A级题库大学英语三级分类
0
大学英语三级A级
大学英语三级
相关试题推荐
Thispassagemightbetakenfrom______.Thepassagesuggeststhat______.
A、Bypost.B、Bytrain.C、Byexpress.D、Byairmail.DHowdidthemansendthesamples?
ThispassagemightbetakenfromWhichdoyouthinkwouldbethebesttitleforthepassage?
Accordingtothepassage,publicgoodsare______.Fromthepassagewelearnthatthepurposeofcollectingtaxesisto______.
Accordingtothepassage,publicgoodsare______.Inthethirdparagraphtheauthorexplains______.
Accordingtothepassage,publicgoodsare______.Thepersonwhodoesnotpayforapublicgood______.
Sofar,howmanyvolumesofthebookhavebeenpublished?WhichofthefollowingisNOTMENTIONEDinthepassage?
Whatdoesthispassagemainlydescribe?Howto______.Howmuchdifferenceofmarginbetweenthetopandthebottom?______
TheCambridgeUniversityistheplace______.Accordingtothepassage,theonlyqualitysharedby______.
A、Threeweeks.B、Amonth.C、Acoupleofweeks.D、2months.C数字信息题。本题是关于时间的,听音时要注意对话中出现的时间,跟选项加以对照,得出答案。
随机试题
职工个人福利补贴的内容包括()
下列属于中国南方私家园林的是【】
商业银行信用风险监测中,行业经营环境出现恶化的预警指标不包括()。
根据《人民币利率管理规定》,下列关于利率的说法,正确的有()。
以下是财产保险业务的是()。
虽然帧扩展技能可以增加千兆位以太网的地理跨距,但是当大量传输短帧时会造成系统带宽浪费严重,大大降低了半双工模式下的传输性能,千兆位以太网采用帧突发技术解决了大量短帧传输所收起的传输性能下降的问题。帧突发技术可以使一个站点一次能连续发送多个帧,是千兆位以太网
设f(x)=x一sinxcosxcos2x,g(x)=,则当x→0时f(x)是g(x)的
下列叙述中正确的是
Whatdeterminestherateofexchangebetweencurrencieswillbeexaminedlaterinthisbooklet,butfirstitisusefultoconsid
A、Heshouldoftenwarmhiskneesupbyusinghotwaterpads.B、Heshouldwarmhimselfupbysittingbythestove.C、Heshoulddr
最新回复
(
0
)