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
18
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
Mostparentshopethattheirchildrenwill______theirexpectations.A、liveoff
Thisnursewas______whenyouweresenttothehospital.A、inturnB、inpractice
关于共有制度,下列说法错误的是( )。A.共有分为共同共有和按份共有 B.按
光缆及光缆线路在施工过程中现场测试的主要指标有()。A.单盘光缆衰耗测试 B
下列各项指标中,能直接体现企业经营风险程度的是()。A.边际贡献率 B
下列各项中,不符合内部牵制的要求的是()。A、出纳人员管票据 B、出纳人员
小魏,17岁。近半年自觉乏力,食欲减退,体重明显减轻,背部及肋部疼痛1个月伴低热
反映不同时间、同一空间、同一现象数值之比的指标是()。A:比例相对数B:比较相
医疗机构制剂申请要求临床研究受试例数不得少于A.20例 B.40例 C.60
背景资料:某工业项目,建设单位委托了一家监理单位协助组织工程招标并负责施工监理工
最新回复
(
0
)