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
2024-02-17
34
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【1】to wander about the African, Eurasian, and American continents.
Today, only two【2】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,【3】vegetation and broke up habitats (栖息地), causing the death of those unable to adapt to the new conditions. Another【4】blames prehistoric humans, whose improved weapons and hunting techniques allowed them to wipe out whole herds of elephants.
To help【5】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【6】regions should match human expansion into those regions. On the contrary, if the extinction was【7】to climate change, elephants should remain in regions【8】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【9】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 refu ges【10】to humans, such as tropical forests, says Surovell.
A. uninviting B. migrated C. declined D. due
E. memorial F. specific G. already N. used
I. hypothesis J. endurance K. resolve L. polish
M. altered O. species [br] 【9】
选项
答案
B
解析
此处应该是动词,且联系上下文可知应是过去式,作谓语。migrated out of Africa意为“迁移出非洲”。
转载请注明原文地址:https://tihaiku.com/zcyy/3459583.html
相关试题推荐
[originaltext]W:Mr.Glieberman,doyouseeanychangeinthehighrateofbrok
[originaltext]W:Mr.Glieberman,doyouseeanychangeinthehighrateofbrok
[originaltext]M:So,whatexactlyareyoudoingtoprotecttheelephantshere?
[originaltext]M:So,whatexactlyareyoudoingtoprotecttheelephantshere?
[originaltext]Manychangesaretakingplaceinthewayinwhichmenandwom
[originaltext]Manychangesaretakingplaceinthewayinwhichmenandwom
TheWorldinaGlass:SixDrinksThatChangedHistoryTomStanda
TheWorldinaGlass:SixDrinksThatChangedHistoryTomStanda
TheWorldinaGlass:SixDrinksThatChangedHistoryTomStanda
TheWorldinaGlass:SixDrinksThatChangedHistoryTomStanda
随机试题
As(i)______asthedisintegrationoftheRomanEmpiremusthaveseemed,thatdi
Sofar,inflationisroaringinonlyafewsectorsoftheeconomy.Whileplatinu
[originaltext]M:Iamreallyexcitedattheprospectofstartingmycomingholi
根据《陕西省建设工程工程量清单计价规则》,项目编码的后三位反映不同的( )。A
下列税种中,属于中央政府和地方政府共享收入的是( )。A.消费税 B.个人所
以下关于做市商的作用,说法正确的是()。A.证券买入价格大于证券卖出价格
预备铃已响,很多同学仍三五成群在教室里说着、笑着、吃着、闹着,嘈杂无章,一片混乱
根据《城乡规划违法违纪行为处分办法》,对行政机关有违法违纪行为的有关责任人由(
长期性的应收账款和存货周转率下降,反映了公司核心流动资产的增加,这需要通过()来
冬季,某居民在自家较封闭房间内的一盆煤火旁发生昏迷,皮肤黏膜呈樱桃红色,导致该症
最新回复
(
0
)