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 tha
When global warming finally came it stuck with a vengeance(异乎寻常地). In some regions temperatures rose several degrees in less tha
admin
2015-01-31
35
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 10000 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 been 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, though some scientists argue that there are some instances having been driven by it.
The new research has profound implications for he environmental summit in Rio. Among other things the findings demonstrate that dramatic climate changes is nothing new for planet Earth. The benign(宜人的)global environment that has existed over the past 10000 years—during which agricultural 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.
Earth scientists have come to understand that climate______.
选项
A、is going through a fundamental change
B、has been getting warmer for 10000 years
C、will eventually change from hot to cold
D、has gone through periodical changes
答案
D
解析
细节题。根据earth scientists将答案定位到第二段Researchers have begunto piece together an illuminating picture of the powerful geological and astronomicalforces that have been combined to change the planet’s environment from hot to cold wetto dry and back again over a time period stretching back hundreds of millions of years.“研究者已经开始拼凑出一幅有关强大的地质和天文力量发生作用的具有启发性的图画,在过去的数亿年间,这两种力量结合在一起改变着地球的环境,使之从炎热到寒冷,从潮湿到干燥,然后过一段时间又如此反复,循环不止。”可知反复循环就是指气候已经经历了阶段性的变化,和选项D的表达一致,所以答案选D。
转载请注明原文地址:https://kaotiyun.com/show/nVh7777K
0
大学英语六级
相关试题推荐
A、Theworld’spopulationin2030.B、Theresourcescrisisby2030.C、Theworseningofenvironmentby2030.D、Severalmeasuresto
WhenIwasachild,myteethusedto【B1】______inseveraldifferentdirections,and【B2】______thatinvolvedratherexpensive【B3】_
WhenIwasachild,myteethusedto【B1】______inseveraldifferentdirections,and【B2】______thatinvolvedratherexpensive【B3】_
WhenIwasachild,myteethusedto【B1】______inseveraldifferentdirections,and【B2】______thatinvolvedratherexpensive【B3】_
WhenIwasachild,myteethusedto【B1】______inseveraldifferentdirections,and【B2】______thatinvolvedratherexpensive【B3】_
WhenIwasachild,myteethusedto【B1】______inseveraldifferentdirections,and【B2】______thatinvolvedratherexpensive【B3】_
TheInternet,e-commerceandglobalizationaremakinganeweconomicerapossible.Bythemiddleofthe21century,capitalistm
TheInternet,e-commerceandglobalizationaremakinganeweconomicerapossible.Bythemiddleofthe21century,capitalistm
WasteNot,WantNotFeedingthe9Billion:TheTragedyofWasteA)By2075,theUnitedNations’mid-rangeprojectionforglobal
随机试题
甲乙丙丁四人成立了一普通合伙企业,甲由于出国想转让自己在合伙企业中的份额,乙丙丁同意甲将自己在合伙企业中的份额转让给戊,下列说法正确的有:
良性肿瘤的异型性主要表现在()
A、 B、 C、 D、 D
A.给予20%甘露醇,保持安静B.清理呼吸道C.选择有效抗生素D.给予10%葡萄糖酸钙E.给予镇静剂新生儿颅内出血伴前囟紧张
从该地随机抽取10名15岁男童和10名成年男子,得到两样本均数分别为10名观测者对随机抽取出的一名男子测得10个身高值,这些观测值与其真实身高之间的差异是由于
A.副作用B.变态反应C.毒性反应D.后遗效应E.特异质反应应用巴比妥类催眠药物后,在次晨仍有乏力、困倦等“宿醉”现象属于()。
煎药时,浸泡饮片的水温不能超过()。
除了交易所交易的标准化期权、权证之外,还存在大量场外交易的期权,这些新型的期权通常叫做()。
根据《民法通则》,代理可分为委托代理、指定代理和法定代理。所谓法定代理是指()。
资本主义工商业的社会主义改造基本完成的标志是()
最新回复
(
0
)