首页
登录
职称英语
Some archaeologists speculate that the Americas might have been initially coloni
Some archaeologists speculate that the Americas might have been initially coloni
游客
2024-01-10
56
管理
问题
Some archaeologists speculate that the Americas might have been initially colonized between 40,000 and 25,000 years ago. However, to support this theory it is necessary to explain the absence of generally accepted habitation sites for that time interval in what is now the United States. Australia, which has a smaller land area than the United State, has many such sites, supporting the generally accepted claim that the continent was colonized by humans at least 40,000 years ago. Australia is less densely populated (resulting in lower chances of discovering sites) and with its overall greater aridity would have presented conditions less favorable for hunter-gatherer occupation. Proportionally, at least as much land area has been lost from the coastal regions of Australia because of postglacial sea-level rise as in the United States, so any coastal archaeological record in Australia should have been depleted about as much as a coastal record in the United States. Since there are so many resource-rich rivers leading inland from the United States coastlines, it seems implausible that a growing population of humans would have confined itself to coasts for thousands of years. If inhabitants were present 25,000 years ago, the chances of their appearing in the archaeological record would seem to be greater than for Australia. [br] The author of the passage implies that, in what is now the United States, archaeological evidence of inhabitation in the period from 40,000 to 25,000 years ago is lacking because that region
选项
A、had its oldest habitation sites inundated following a postglacial rise in sea level
B、had many resource-rich rivers that facilitated the dispersal of early inhabitants from an initial concentration in coastal areas
C、was sparsely populated until about 25,000 years ago
D、was colonized less than 25,000 years ago
E、was inhabited only by hunter-gatherers until 25,000 years ago
答案
D
解析
根据本文最后的结论,美洲之所以没有遗址,是因为在40,000年到25,000年之前没有人居住,因此人类的居住只能发生在晚于25,000年前。
转载请注明原文地址:https://tihaiku.com/zcyy/3350731.html
相关试题推荐
AftertheColonialperiod’s50percentmortalityrate,lifeexpectancyimproved
ArchaeologistsinIrelandbelievethatarecentlydiscoveredchalice,whichdate
ArchaeologistsworkingintheAndesMountainsrecentlyexcavatedaburied4,000-
ThegreatestroadsystembuiltintheAmericaspriortothearrivalofChristoph
Archaeologistshavelongthoughtthatanartifactcalledthepemchintwasusedb
A、establishatrucewithhiscolonialcompetitors,suchasFranceB、foreswearth
A、thecolonialauthorityneversoughttoemploytaxationinFrenchCanadaexcept
OCCLUDED:A、unhinderedB、interconnectingC、speculatedD、reducedE、prolongedA
Initially______expectation,Stellawasdismayedtolearnthathernewdutieswou
Scientistshavelongspeculatedastotheextentthatinbreedingcont
随机试题
Whenmywife,Meg,sufferedaseverestrokethatimmobilizedherleftside,
Manyofourdreams______impossibleinthepasthavecometrue.A、wereconsidere
[originaltext]M:Youaregoingtowearoutthecomputer’skeyboard.W:Oh.Hi.M:
Varietiesofyellowgrapesthathavetenderskin,richflavorandhighsugarcon
邮件、短信、微博、微信等都属于电子沟通,这已经成为当代组织中不可或缺的沟通手段。
肺炎患者胸痛时宜A.头低脚高位 B.头胸抬高15°~30° C.平卧位 D
简述南京国民政府法律体系的主要构成。
甲公司对投资性房地产采用公允价值模式进行后续计量。2×20年3月1日,该公司将一
PPP模式下,PSC值是()的全生命周期现值之和。A.参照项目的建设和运营维护
影响建设工程项目质量的技术因素涉及的内容十分广泛,如工程检测检验技术、()等。
最新回复
(
0
)