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
33
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
[originaltext]M:Comein!W:Hi,John!(12)Ijustwonderedifyouwantedtogo
______,thenegotiationwentfurtheron.A、WiththefirstpointagreeingonB、Wit
在强烈地震作用下,对竖向不规则的结构,下列叙述中哪一项是不正确的?()A.在
卫生服务需求形成的条件是A.消费者的偏好和预期 B.消费者的教育程度 C.消
患者女,30岁。右下腹疼痛4小时。超声检查:右下腹超声加压扫描见一管样结构,部分
四、装饰画的设计与制作 装饰画的主要特点 装饰画是绘画门类中的一种,
投资项目决策分析与评价的基本要求包括贯彻落实科学发展观、资料数据准确可靠和()
坝区渗漏问题是指( )。A.坝基渗漏 B.坝体渗漏 C.绕坝渗漏 D.渗
施工现场临时用电工程的定期检查周期是()A.每月一次 B.每季一次 C.每月
实施总承包管理模式的基本出发点是()A.有利于项目的质量控制 B.有利于项目的
最新回复
(
0
)