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
2023-07-23
24
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【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, ff 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/2863078.html
相关试题推荐
Thelecture______(今天下午要上的)willincludetheradicalchangesbroughtaboutbythe
[originaltext]Intheearly1800sanewkindofpowerchangedtransportation
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarte
随机试题
Lookingback,itwasnaivetoexpectWikipedia’sjoyridetolastforever.Sinc
某投机者在LME铜期货市场进行蝶式套利,他应该买入5手3月LME铜期货合约,同时卖出8手5月LME铜期货合约,再()。A、在第二天买入3手7月LME铜期
设0<xn<1,n=1,2,…,且有xn+1=-xn^2+2xn,则( )。
当首席审计官为年度审计计划进行风险评估,下列哪项最有可能提高潜在审计领域的评估风
下列我们日常生产生活所需的产品中,不属于发酵工程产品的是()。A.农民自酿的米醋
客户基本资料 韩先生35岁,是一家合伙企业的合伙人。2006年,他与同岁的
Thechangeinthatvillagewasmiraculou
药物中的重金属检查是在规定pH条件下与硫代乙酰胺作用显色,该条件为A.pH5.0
某建筑商业金融机构贷款500万元,按复利计息,年利率为12%。若第五年末一次还本
下列各项中,不影响利润表“营业利润”的项目是()。A.提供主营劳务收入
最新回复
(
0
)