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
Egypt Felled by Famine Even ancient Egypts mighty pyramid builders were powerless in the face of the famine that helped brin
Egypt Felled by Famine Even ancient Egypts mighty pyramid builders were powerless in the face of the famine that helped brin
admin
2011-01-05
43
问题
Egypt Felled by Famine
Even ancient Egypts mighty pyramid builders were powerless in the face of the famine that helped bring down their civilian around 2180 BC. Now evidence gleaned(搜集) from mud deposited by the River Nile suggests that a shift in climate thousands of kilometers to the south was ultimately to blem -- and the same or worse could happen today.
The ancient Egyptians depended on the Niles annual floods to irrigate their crops. But any change in climate that pushed the African monsoons(季风)southwards out of Ethiopia would have diminished these floods.
Dwindling(逐渐变少;使变少)rains in the Ethiopian highlands would have meant fewer plants to establish the soil. When rain did fall it would have washed large amounts of soil into the Blue Nile and into Egypt, along with sediment(沉积;沉积物)from the White Nile.
The Blue Nile mud has a different isotope signature(签名;特征) from that of the White Nile. So by analyzing isotope(同位素;核素)differences in mud deposited in the Nile Delta, Michael Krom of Leeds University worked out what proportion of sediment came from each branch of the river.
Krom reasons that during periods of drought, the amount of the Blue Nile mud in the river would be relatively high. He found that one of these periods, from 4,500 to 4,200 years ago, immediately predates the fall of the Egypts Old Kingdom.
The weakened waters would have been catastrophic for the Egyptians. Changes that affect food supply dont have to be very large to have a ripple effect in societies, says Bill Ryan of the Lamont Doherty Earth Observatory(天文台)in New York.
"Similar events today could be even more devastating, " says team member Daniel Stanley, a geoarchaeologist(地质考古学家) from the Smithsonian Institution in Washington, D. C. "Anything humans do to shift the climate belts would have an even worse effect along the Nile system because the populations have increased dramatically. "
Which of the following factors was ultimately responsible for the fall of the civilization of ancient Egypt?
选项
A、Change of climate.
B、Famine.
C、Food.
D、Population growth.
答案
A
解析
文章第一段提到“他们的文明在饥荒面前也无能为力。目前从尼罗河沉积的泥浆中收集的证据表明这次饥荒最终归咎于气候的变换向南方推移了数千公里”,因此气候的变化是造成文明毁灭的根本性因素,而饥荒只是表层的因素.故选A。
转载请注明原文地址:https://kaotiyun.com/show/5MQd777K
本试题收录于:
职称英语理工类B级题库职称英语分类
0
职称英语理工类B级
职称英语
相关试题推荐
Solvingaproblemcanbebrokendownintoseveralsteps.First,theproblemmustbeidentifiedcorrectly.Psychologistsreferto
ExerciseWhetherornotexerciseaddstothelengthoflife,itiscommonexperiencethatacertainamountofregularexerci
ExerciseWhetherornotexerciseaddstothelengthoflife,itiscommonexperiencethatacertainamountofregularexerci
HowTwoGreatConflictsHelpedtoChangeEuropeNinetyyearsagoonasunnymorninginNorthernFrance,somethinghappenedt
Lookingtohelptheenvironment?Considerthefollowingsimpleideas.Turnoffelectricaldeviceswhenthey’renotbeinguse
SeekHealthandWellness1Whetheryouarebusystudyingorstartingclerkship,itisabsolutelyessentialtomaintainhealthand
ANewMedicinetoTreatBothAIDSandHepatitisBAmedicineapprovedlastmonthtotreatAIDS(艾滋病)alsoshowspromiseagain
ANewMedicinetoTreatBothAIDSandHepatitisBAmedicineapprovedlastmonthtotreatAIDS(艾滋病)alsoshowspromiseagain
DungtoDeathFieldsacrossEuropearecontaminatedwithdangerouslevelsoftheantibioticsgiventofarmanimals.Thedrugs,w
EconomicReforminChinaMoreUSsinologistshaveexpressedconfidenceinChina’seconomicreformandtheprospectsforChina’s
随机试题
志愿者参加社会服务的动机有所不同,下面哪项是以自我为中心的动机?()
子宫颈癌的不典型增生
"Igotcancerinmyprostrate."DetectiveAndySipowiczofthefictional15’Precinct,astoic,bigbearofaman,isclearlyi
表1中pH平均值计算有误,请予以更正。根据素材中提供的数据计算监测期间污水处理厂的生产负荷,并说明此负荷是否符合要求。
________应当按照一般进口货物的报关程序报关。
基金管理公司的设立须经( )批准。
小学生在日常生活中已经能分辨你我他、上下左右等概念,这些概念一般是通过()获得的。
下列选项中,属于职权性行政主体的是()。
2012年,三沙市伴随海南省西沙群岛、南沙群岛、中沙群岛办事处撤销而设立。根据我国现行相关法律,三沙市的设立必须由()批准。
Bob:DoyoumindffIplaysomemusic?Lily:________.I’mwritingmyassignment.
最新回复
(
0
)