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
Why are"Clovis people" believed to first enter North America?
Why are"Clovis people" believed to first enter North America?
admin
2019-05-09
38
问题
Why are"Clovis people" believed to first enter North America?
In the 1930s, archaeologists discovered spear points in the New Mexico town of Clovis, dated from around 13, 000 years ago. The individuals who made them have since become known as the"Clovis people" and are believed by many to have been the first people to enter North America.
The" Clovis first "theory proposes that around 14, 000 years ago people traveled across a land bridge that existed between Siberia and Alaska. Once in North America, their journey took them through a corridor that opened up between the ice sheets in Western Canada making them the first to be able to enter the interior of the continent. It’ s an elegant and almost biblical explanation, but more recent fossil finds question the theory. Some researchers believe the first people entered North America much earlier—perhaps as long as 20, 000 -30, 000 years ago.
In more recent years, the Pacific coast has been seen as an alternative route of entry—possibly at an earlier date than the Clovis. There is little direct evidence to support this, but fossil evidence from the islands of south-east Alaska tells us that this region, or part of it, was free of ice and may have been a refuge for animals throughout the ice age.
If animals such as bears and foxes lived here then why not people? Fossilized human remains have been found on Alaska’ s Prince of Wales Island and much further south on the Channel Islands off California. These are thought to be as old as some of the Clovis finds and it may only be a matter of time before older remains are discovered.
If people did travel down the coasts between islands, they must have used boats. Although the coastal route still lacks a lot of hard evidence, the relatively recent discovery of a stone tool off the coast of British Columbia has added support to the idea.
选项
A、Some fossils have been discovered.
B、They were found to have lived in the area known as the refuge during the ice age.
C、Some spear points were discovered.
D、It is in accordance with the biblical explanation.
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/9mCd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
UNSecretary-GeneralKofiAnnanvisitedthetroubledDarfurregionofwesternSudanThursdaytoconsiderwaystoendthehumanit
ACanadianresearcherhasdiscoveredthatsoundtravels【21】______airmorethanone-halfkilometeranhourslowerthanhadb
Giventhelackoffitbetweengiftedstudentsandtheirschools,itisnotsurprisingthatsuchstudentsoftenhavelittlegood
Directions:Forthispart,youareallowed35minutestowriteacompositiononthefollowingquestions.Yourpartofwritingsh
ItwasaverygoodyearfortheGlobal500,new-comersandold-comersalike.Butcanitlast?ThinkofFORTUNE’sGlobal50
ItwasaverygoodyearfortheGlobal500,new-comersandold-comersalike.Butcanitlast?ThinkofFORTUNE’sGlobal50
BenjaminJones
HowisBarbaratravelingtotheshopstomorrow?
WhoisBarbaragoingtoshopwith?
随机试题
甲股份有限公司(以下简称“甲公司”)2013年度财务报告经董事会批准对外报出日为2014年3月31日,2013年度所得税汇算清缴于2014年3月18日完成。甲公司适用的所得税税率为25%,所得税采用资产负债表债务法核算。假设甲公司2013年年初未分配利润为
(2012年4月)关于劳动争议诉讼当事人的确定正确的是_________。
患者,男,40岁。两侧腮腺反复肿胀疼痛1年,肿胀与进食有关。检查:两侧腮腺稍肿大,能扪出肿大的腮腺轮廓,轻微压痛,导管口稍红,挤压腮腺导管口流出混浊“雪花样”唾液。为明确诊断,应做的辅助检查是
下列哪项疾病不适合行胆囊切除术
首先需采取的护理措施是输液速度应是每千克体重每小时
甲公司与乙公司签订厂技术转让合同,在履行合同的过程中双方发生纠纷。甲公司依据合同中约定的仲裁条款向A市仲裁委员会申请仲裁,仲裁裁决作出后,乙公司拒不履行仲裁裁决,甲公司申请强制执行仲裁裁决,乙公司则以仲裁程序违反法定程序为由,申请撤销仲裁裁决。下列说法正确
个人理财业务中,客户和商业银行之间是()关系。
PerhapsonlyalittleboybeingtrainedtobeawizardattheHogwardsschoolmagiccouldcastaspellsopowerfulastocreate
TherearemorethanfortyuniversitiesinBritain--nearlytwiceasmanyasin1960s.Duringthe1960seight【C1】______newoneswe
A、Copysomeinformationfromhisclassmates.B、LookforsomeinformationontheInternet.C、Tryhisluckinanotherlibrary.D、B
最新回复
(
0
)