首页
登录
职称英语
Hungry prehistoric bunters, not climate change, drove elephants to extinctio
Hungry prehistoric bunters, not climate change, drove elephants to extinctio
游客
2024-02-12
40
管理
问题
Hungry prehistoric bunters, not climate change, drove elephants to extinction during the Pleistocene era(更新世), new research suggests.
At least 12 kinds of elephants【S1】______to wander about the African, Eurasian, and American continents. Today, only two【S2】______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,【S3】______vegetation and broke up habitats(栖息地), causing the death of those unable to adapt to the new conditions. Another【S4】______blames prehistoric humans, whose improved weapons and hunting techniques allowed them to wipe out whole herds of elephants.
To help【S5】______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【S6】______regions should match human expansion into those regions. On the contrary, if the extinction was【S7】______to climate change, elephants should remain in regions【S8】______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【S9】______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 refuges【S10】______to humans, such as tropical forests, says Surovell.
A)uninviting I)hypothesis
B)migrated J)endurance
C)declined K)resolve
D)due L)polish
E)mysterious M)altered
F)specific N)used
G)already O)species
H)casually [br] 【S9】
选项
答案
B
解析
此处应该是动词,而且是过去式,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/3444471.html
相关试题推荐
His______changeveryquickly;onemomenthe’scheerful,andthenexthe’scompl
[originaltext]Chequeshavelargelyreplacedmoneyasameansofexchange,f
[originaltext]Chequeshavelargelyreplacedmoneyasameansofexchange,f
[originaltext]TheclimateofthewestcoastisthemostmoderateinCanada.
Greatchangeshavetakenplaceinthemountainvillage,anditsappearanceis__
Recently,theUnitedNationsscientificpanelstudyingclimatechangedeclar
Recently,theUnitedNationsscientificpanelstudyingclimatechangedeclar
Change--ortheabilityto______(使自己适应变化中的环境)--isessentialtoevolution.adapt
QuickChangeinStrategyforaBooksellerInthemovieY
QuickChangeinStrategyforaBooksellerInthemovieY
随机试题
Thefirstwaywecanapproachlanguageisasaphenomenonoftheindividual
Justlikewriting,____________(翻译也能使人精确).translationcanmakeapersonexact,
狭义的公债券流通指的是( )。A.公债券的发行 B.公债券在流通市场上的转
现行国家统计调查制度中,固定资产投资统计范围从报表类型来分包括( )。A.固定
以下图形序列,将哪两个调换位置后,可以呈现出一定的规律性? A.①和② B.
长期微渗的气体绝缘互感器应开展SF6气体微水检测和带电检漏,必要时可缩短检测周期
投标文件应当包括的内容有()A:投标函 B:投标报价 C:物业管理方案 D
在国务院领导下制定和实施货币政策的宏观调控部门是()。A:中国证券监督管理委员会
(2019年真题)涉及商业秘密的诉讼案件,一律不公开审理。()
满足鼠笼型电动机全压启动的条件中错误的是()。 A.电动机启动时,其端电压应保
最新回复
(
0
)