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
53
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
•Readthetextbelowaboutleadership.•Choosethecorrectwordtofilleachg
中国等发展中国家向美国提供了大量价廉物美的商品,使美国传统制造业腾出财力物力用于发展高新技术。这加快了美国工业的升级换代,推进了美国产业结构的优化,使美
CustomsofBulgaria:MarriageandFamily保加利亚习俗:婚姻与家庭Theaverageage
Properarrangementofclassroomspaceisimportanttoencouraginginter
TheFrenchdivisionofMcDonald’shasrunadvertisementsthatincludedasur
患者,男性,63岁。恶心,腹痛,腹泻4次/日,伴里急后重感,发热38.5℃,2天
过流保护加装复合电压闭锁可以(C).(A)加快保护动作时间;
印有圣诞老人的圣诞卡
下列造成质量波动的原因中,属于偶然原因的是()A、现场温湿度的微小变化 B、机
某单位为庆祝春节欲申请举办大型焰火燃放活动。依据《烟花爆竹安全管理条例》,下列关
最新回复
(
0
)