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
2016-04-30
79
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/8xG7777K
0
大学英语六级
相关试题推荐
Historically,humansgetseriousaboutavoidingdisastersonlyafteronehasjuststruckthem.Bythatlogic,2006shouldhaveb
SevenStepstoaMoreFulfillingJobA)Manypeopletodayfindthemselvesinunfulfillingworksituations.Infact,oneinfourw
WhenIwasachild,myteethusedto【B1】______inseveraldifferentdirections,and【B2】______thatinvolvedratherexpensive【B3】__
Peopletendtounderestimatetheirlifeexpectancy,andit’snotsurprising.It’sthelook-aroundproblemagain:You【C1】______fr
Peopletendtounderestimatetheirlifeexpectancy,andit’snotsurprising.It’sthelook-aroundproblemagain:You【C1】______fr
A、Solvetheconflictsprivatelywiththeinventor.B、Givetheinventorsomecompensation.C、Buythepatentfromtherealinvento
Sometwentyyearsago,theperformanceofgirlsandboysinclasswascompared.Boys【B1】______betterinexams,sovariousmeasures
A、Thedirectorprobablyisn’tabletomakeanexception.B、Thedirectorprobablywon’tseeher.C、Thedirectorusuallyisn’tver
Whatifclothingwasmorethanjustanaccessory?Thegreenmovementisnotnewtofashion,andmanydesignersandmanufacturers
Somefuturologistshaveassumedthatthevastupsurge(剧增)ofwomenintheworkforcemayportendarejectionofmarriage.Manywom
随机试题
企业采用市场反应型供应链来提供创新型产品时,通常可采取的措施有:()。
在物品的消毒中,首选
比较两组单位不同变量值的变异程度表示一组变量值的变异大小
A.贫血,黄疸,脾大,血Coombs试验(+)B.贫血,高热,脾大,骨髓涂片PAS染色(+)C.贫血,网织红细胞25%,血Ham(+)D.贫血,出血,高热,巨核细胞减少E.巨核细胞增多再生障碍性贫血
股权投资基金通常被描述为“有耐心的资本”,是因为()。
资料一:2008年10月20日,ABC公司发出盈利预警,称公司为减低西澳洲铁矿项目面对的货币风险,签订若干杠杆式外汇买卖合约而引致亏损,实际已亏损8.07亿港元。至10月17日,仍在生效的杠杆式外汇合约按公平价定值的亏损为147亿港元。换言之,相关
未取得经济法律关系的主体资格的组织不能参与经济法律关系,不能从中享有权利和承担义务,不受法律保护。()
范围管理是项目管理的关键,它包括产品的范围、最终成果和()。
蒙田说:“初学者的无知在于未学,而学者的无知在于学后。”意思是说,第一种无知是连字都不识,当然谈不上有学问;第二种无知却是错读了许多书,反而变得无知。“初学者”的无知容易辨别,也容易避免;但是“读书读得越多越好”的错误观点似乎更能迷惑人,因此有必要审慎选择
A、Theytendtobemoreintroverted.B、Theyaremorelikelytopursueperfection.C、Theyaremoreopentonewexperiences.D、They
最新回复
(
0
)