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
New ice core samples taken from the centre of the Greenland ice-sheet have given a detailed record of the last "interglacial(间冰期
New ice core samples taken from the centre of the Greenland ice-sheet have given a detailed record of the last "interglacial(间冰期
admin
2010-07-24
63
问题
New ice core samples taken from the centre of the Greenland ice-sheet have given a detailed record of the last "interglacial(间冰期)" which ran from about 135,000 to 115,000 years ago. The cores, taken from a depth of 2,780 to 2,870 metres, show that during this period the climate oscillated(摆动) between three states instead of remaining in one, as in the whole of recorded human history. The middle state was like our own, but the others were either much colder or warmer.
Worse, it seems that the climate flipped from one Condition to another very rapidly. "It apparently took very little time, perhaps less than a decade or two, to shift between the states," Dr. J. C. W. White of the Institute of Arctic and Alpine Research at the University of Colorado wrote earlier this year in the scientific journal, Nature: "We humans have built a remarkable socio-economic system during perhaps the only time when it could be built, when the climate was stable enough to let us develop the agricultural infrastructure(基础设) required to maintain an advanced society. "
We do not know why we have been so blessed. But if the Earth had an operating manual, the chapter on climate might begin with a warning that the system has been adjusted at the factory for optimum comfort-so don’t touch the dials.
Unfortunately, we have been "twiddling the knobs(旋钮)" for decades. In December 1995 the official Intergovernmental Panel on Climatic Change (IPCC., which represents the work of 2,000 top meteorologists from around the world, concluded that global warming due to human activities is probably already taking place. Global warming sounds deceptively favorable to inhabitants of countries which currently experience harsh winters. In fact, with global warming, the world would struggle to cope with the effects of even a steady, gradual warming. This was spelt out to members of the British Royal Society by Sir John Houghton, chairman both of Britain’s Royal Commission of Environmental Pollution and of one of the main IPCC working groups. Houghton put forward the IPCC picture of seas flooding much of Egypt, Southern China and Bangladesh, making "many millions" of people homeless ; of hordes of "environmental refugees" and of wars breaking out over dwindling ( becoming gradually smaller) fresh water supplies, as world rainfall patterns changed.
There is at least a chance that the world could adapt to steady warming if it happened slowly enough. However, many scientists, believe that even this prediction from the IPCC is too cautious.
According to the author, IPCC pictures put forward by Houghton shows ______.
选项
A、effects of global warming
B、causes of global warming
C、examples of human damage to the environment
D、instances of natural disasters threatening human existence
答案
A
解析
IPCC提供的照片、图片显然是为了说明global warming的effects。参阅上题解答。
转载请注明原文地址:https://kaotiyun.com/show/3VN7777K
0
大学英语四级
相关试题推荐
OneafternoonjustbeforeChristmas,anoldgentlemanwas【B1】______throughthecitycentre.Thegaily【B2】______shopswerepacked
MoneyspentonadvertisingismoneyspentaswellasanyIknowof.Itservesdirectlytoassistarapid【B1】______ofgoodsatre
A、Theyarestudyingwhypeopleexpendcalories.B、Theyarestudyinghowlongpeopleshouldspendonexercising.C、Theyarestudy
A、Inthegymnasium.B、Intheoffice.C、Intherestaurant.D、Inthehospital.A
A、Shedoesn’twanttoseethegame;shepreferstostayathome.B、Shethinksit’sgoingtobedifficulttogettickets.C、Shea
WhenIsay"communication,"mostofyoumaythinkabout【B1】______communication—thatisthewordsweusewhenwetalktosomeone.
A、Buysomefootballgametickets.B、StayathomeandwatchTV.C、Stayathomeanddosomestudying.D、Gotothefootballgame.B
A、Joanmayhavetakenawrongtrain.B、Joanwon’tcometotheconference.C、Joanwillmissthenextconference.D、Joanmaybela
A、Becausetheyhaveadrivinglicense.B、Becausetheyhavereceivedspecialtraining.C、BecausethetrafficconditionsinLondon
WhowontheWorldCupfootballgame?WhathappenedattheUnitedNations?Howdidthecriticslikethenewplay?【C1】______aneve
随机试题
张老师在教学中经常用奖励来激发学生的学习动机,培养学生良好的学习习惯。张老师的这种做法符合()。
既能治疗风湿性关节炎,又有抗血栓作用的药物是()。
下列关于食管静脉曲张的描述不正确的是
正常时从胎儿娩出到胎盘娩出所需的时间为
A.45%~65%B.45%~75%C.20℃D.25℃E.30℃药品经营企业阴凉库温度不高于
在黏性土层中取土时,取土器取土质量由高到低排列,下列哪个选项的排序是正确的?
不可撤销的信用证一旦寄达受益人以后,在其有效期间内,非经开证人、开证银行、保兑银行或受益人等有关方面的同意,不得将该信用证的条款进行修改或撤销。()
赵某、钱某都是某公司的职员,两人同住一宿舍。2007年春,公司派赵某到珠海办事处工作1年。临行前,赵某将已使用了1年的一台电脑委托给钱某保管并允许其使用。1个月后,赵某给钱某写信说自己买了一台笔记本电脑,委托其保管的电脑可以适当价格出售,但modem因还有
UDP可以为其用户提供不可靠的、面向【】的传输服务。
在考生文件夹下,打开文档WORD1.DOCX,按照要求完成下列操作并以该文件名(WORD1.DOCX)保存文档。将正文第三段(“农业部副部长……技术途径。”)分为等宽的两栏。
最新回复
(
0
)