首页
登录
职称英语
Hungry prehistoric hunters, not climate change, drove elephants to extinctio
Hungry prehistoric hunters, not climate change, drove elephants to extinctio
游客
2024-01-26
51
管理
问题
Hungry prehistoric hunters, not climate change, drove elephants to extinction during the Pleistocene era (更新世), new research suggests.
At least 12 kinds of elephants【C1】______to wander about the African, Eurasian, and American continents. Today, only two【C2】______of elephants are left in South Asia and Africa. One theory for this dramatic death holds that rapid climate shifts at the end of the most recent major ice age, some 10,000 years ago,【C3】______vegetation and broke up habitats (栖息地), causing the death of those unable to adapt to the new conditions. Another【C4】______blames prehistoric humans, whose improved weapons and hunting techniques allowed them to wipe out whole herds of elephants.
To help【C5】______the debate, archaeologist Todd Surovell of the University of Wyoming, and colleagues tested two assumptions. If humans caused the elephant extinction, Surovell reasoned, the timing of the die-off in【C6】______regions should match human expansion into those regions. On the contrary, if the extinction was【C7】______to climate change, elephants should remain in regions【C8】______colonized by humans and would only begin to die off once climate change occurred.
The team tested both theories by analyzing where and when elephants were killed. In all, the study included 41 archaeological sites on five continents. The researchers found that, as humans【C9】______out of Africa, they left a trail of dead elephants behind them. The creatures disappear from the fossil record of a region once it became colonized by humans. Modern elephants survived in rerfuges【C10】______to humans, such as tropical forests, says Surovell.
A. uninviting B. migrated C. declined D. due
E. memorial F. specific G. already H. casually
I. hypothesis J. endurance K. resolve L. polish
M. altered N. used O. species [br] 【C8】
选项
答案
G
解析
此处应该是状语成分,由副词充当。从上下文语义的逻辑性看,只有already合适。
转载请注明原文地址:https://tihaiku.com/zcyy/3395373.html
相关试题推荐
如今大学生的生活方式正在发生着变化。Nowcollegesanduniversitiesareseeingachangeinthestude
[originaltext]Overtheyears,newtechnologieshavechangedfarming.Change
[originaltext]Overtheyears,newtechnologieshavechangedfarming.Change
[originaltext]Whatreallyworkstomakesustainablechangesindietandlif
[originaltext]Whatreallyworkstomakesustainablechangesindietandlif
[originaltext]PresidentBushspokeonthefirstanniversaryofthechangeo
[originaltext]TherearemanyreasonswhyfamilylifeinBritainhaschanged
[originaltext]Withinacontextofrapidtechnologicalchangeandshiftingma
[originaltext]Withinacontextofrapidtechnologicalchangeandshiftingma
[originaltext]Withinacontextofrapidtechnologicalchangeandshiftingma
随机试题
Whatarepollinators?[originaltext]Rowersareknowntoemployallmanneroftri
[originaltext]Whenyouturnontheradio,youhearanadvertisement.Wheny
Todayisoneofthehappiestandsaddestdaysinmylife.Iamveryhappyth
[originaltext]YoucouldsaythatJosephCornellbecameanartistbecauseof
双代号网络计划中,关于关键节点的说法,正确的有()。 A.以关键节点为完
施工工地防火安全管理具体要求有()。A.工地应当建立消防管理制度、动火作业审批
全自动血型仪在进行血型判读时,不需要哪个参数( )。A.凝集强度 B.积分面
世界卫生组织为推动基本卫生保健的实施提出了一系列政策、策略、目标和指标,出版的比
下列关于承载板法测定土基回弹模量的说法中,正确的是() A.测定时当两台
绩效反馈的主要目的是( )。A.改进绩效 B.指出员工的不足 C.激励员工
最新回复
(
0
)