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
When global warming finally came, it stuck with a vengeance(异乎寻常地). In some regions, temperatures rose several degrees in less t
When global warming finally came, it stuck with a vengeance(异乎寻常地). In some regions, temperatures rose several degrees in less t
admin
2018-08-25
55
问题
When global warming finally came, it stuck with a vengeance(异乎寻常地). In some regions, temperatures rose several degrees in less than a century. Sea levels shot up nearly 400 feet, flooding coastal settlements and forcing people to migrate inland. Deserts spread throughout the world as vegetation shifted drastically in North America, Europe and Asia. After driving many of the animals around them to near extinction, people were forced to abandon their old way of life for a radically new survival strategy that resulted in widespread starvation and disease. The adaptation was farming: the global-warming crisis that gave rise to it happened more than 10,000 years ago.
As environmentalists convene in Rio de Janeiro this week to ponder the global climate of the future, earth scientists are in the midst of a revolution in understanding how climate has changed in the past—and how those changes have transformed human existence. Researchers have begun to piece together an illuminating picture of the powerful geological and astronomical forces that have combined to change the planet’s environment from hot to cold, wet to dry and back again over a time period stretching back hundreds of millions of years.
Most important, scientists are beginning to realize that the climatic changes have had a major impact on the evolution of the human species. New research now suggests that climate shifts have played a key role in nearly every significant turning point in human evolution: from the dawn of primates(灵长目动物)some 65 million years ago to human ancestors rising up to walk on two legs, from the huge expansion of the human brain to the rise of agriculture. Indeed, the human history has not been merely touched by global climate change, some scientists argue, it has in some instances been driven by it.
The new research has profound implications for the environmental summit in Rio. Among other things, the findings demonstrate that dramatic climate change is nothing new for planet Earth. The benign(宜人的)global environment that has existed over the past 10,000 years—during which agriculture, writing, cities and most other features of civilization appeared—is a mere bright spot in a much larger pattern of widely varying climate over the ages. In fact, the pattern of climate change in the past reveals that Earth’s climate will almost certainly go through dramatic changes in the future— even without the influence of human activity.
Scientists believe that human evolution _____.
选项
A、has seldom been accompanied by climatic changes
B、has exerted little influence on climatic changes
C、has largely been affected by climatic changes
D、has had a major impact on climatic changes
答案
C
解析
文章第3段第1、2句提到“最重要的是,科学家已经开始意识到气候的变化对人种的进化有着主要的影响。现在新的研究表明几乎在人类进化的每一个重大的转折时期天气变化都起着关键的作用”,所以人类进化受到气候变化的影响。因此,C正确。
转载请注明原文地址:https://kaotiyun.com/show/GQH7777K
0
大学英语六级
相关试题推荐
Tofindoutwhattheweatherisgoingtobe,mostpeople【B1】______theradio,television,ornewspapertogetanexpertweatherf
Tofindoutwhattheweatherisgoingtobe,mostpeople【B1】______theradio,television,ornewspapertogetanexpertweatherf
Tofindoutwhattheweatherisgoingtobe,mostpeople【B1】______theradio,television,ornewspapertogetanexpertweatherf
Toseeifhaircoloraffectsaperson’schancesofgettingajob,researchersatCaliforniaStateUniversityasked136colleges
A、Hewelcomesthemfortakingawaypartofthework.B、Hehatesthemforhavingnoconsciousness.C、Helikesthembecausetheya
A、Afamilywithhighereducation.B、Anunmarriedcollegegraduate.C、Alawyerknownfarandwide.D、Afamilywithloweducation.
NineofthetencampusesoftheUniversityofCalifornia—ledbyBerkeley—onceagainmadeitintoanannualrankingoftheworld’
NineofthetencampusesoftheUniversityofCalifornia—ledbyBerkeley—onceagainmadeitintoanannualrankingoftheworld’
TheValueofWritingWell[A]It’sthattimeofyearagain.No,not"theholidayseason".Imean,itisholidaytime,butfor
Manycountrieshaveaholidaytocelebrateworkers’rightsonoraroundMay1,butLabourDayinCanadaiscelebratedonthefir
随机试题
(2002年第69题)NHL累及胃肠道的最常见部位是
碱性磷酸酶在骨肿瘤诊断中的意义
胃癌淋巴结转移的常见部位是
下列哪种辅食可用于7个月小儿
田某是甲房地产经纪机构(以下简称甲机构)的注册房地产经纪人。田某接待了欲出售房产的胡某。经过详细的洽谈,田某代表甲机构同胡某签订了房地产销售代理合同,并通过多个渠道将信息发布出去。几天后,田某通知胡某,赵某欲购买该房。正在外地出差的胡某询问田某可否代理自己
根据无形资产计价规定,下列内容中,一般作为无形资产入账的是()。
包括一个简单股票期权头寸和一个标的股票头寸的策略有许多不同种类,组合的效果也不尽相同,一个股票的多头与一个看跌期权的多头组合后,可以看做()
阅读下列说明,回答问题l至问题3,将答案填入答题纸的对应栏内。【说明】A公司承接了一个为某政府客户开发ERP软件的项目,任命小张担任项目经理。由于该客户与A公司每年有上千万元的项目合作,A公司管理层对该客户非常重视,并一再嘱咐小张要保证
在窗体上画一个命令按钮,然后编写如下事件过程:PrivateSubCommand1_Click()aS=InputBox("请输入一个二进制数")n=Len(a$)Fori=1TonDec=Dec*2+_______(aS,i,1)Nex
Wheredoesthisconversationprobablytakeplace?
最新回复
(
0
)