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
2023-07-28
17
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 his 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 whet1 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. Modem elephants survived in refuges【S10】______to humans, such as tropical forests, says Surovell.
A) uninviting B) migrated C) used D) due
E) mysterious F) specific G) already H) casually
I) hypothesis J) endurance K) resolve L) polish
M) altered N) declined O) species [br] 【S9】
选项
答案
B
解析
此处应为动词做谓语,且是过去式,migrate out意为“迁出”。
转载请注明原文地址:https://tihaiku.com/zcyy/2876946.html
相关试题推荐
【B1】[br]【B14】A、affectB、goodnessC、effectD、changeB文中指这种经历给我们的生活带来连锁影响。此处应选择名
TheWorldinaGlass:SixDrinksThatChangedHistoryTomSta
TheWorldinaGlass:SixDrinksThatChangedHistoryTomSta
TheWorldinaGlass:SixDrinksThatChangedHistoryTomSta
TheWorldinaGlass:SixDrinksThatChangedHistoryTomSta
TheWorldinaGlass:SixDrinksThatChangedHistoryTomSta
TheWorldinaGlass:SixDrinksThatChangedHistoryTomSta
TheWorldinaGlass:SixDrinksThatChangedHistoryTomSta
BritishColumbiahasgreatervariationsinclimatethananyotherprovinceinCa
BritishColumbiahasgreatervariationsinclimatethananyotherprovinceinCa
随机试题
TheTruthabouttheEnvironmentA)Formanyenvironmentalists
He______thathecouldcreatelivefishoutofchemicals.A、demandedB、assertedC、
下图作品的书体是() A.柳体 B.颜体 C.赵体 D.欧体
当任一台站用变失电时,备用站用变应能()切换至失电的工作母线段继续供电。(A
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性:
2017年12月1日,中国共产党与世界政党高层对话会在北京开幕,来自120多个国
下列各项中,属于产业政策范畴的是()。 A.会计准则B.钢铁产业发展政
关于贷款,下列定义正确的有()。A.正常:借款人能够履行合同,没有足够理由怀疑
(2017年真题)用于测量低压,负压的压力表,被广泛用于实验室压力测量或现场锅炉
下列关于联合体投标的说法,错误的是( )。 A.联合体各方均应当具备承担招标
最新回复
(
0
)