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
2023-07-11
25
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] 【S6】
选项
答案
F
解析
此处需要一个形容词作定语,修饰名词regions。根据下文的those regions,specific一词合适,即specific regions(特定地区)。
转载请注明原文地址:https://tihaiku.com/zcyy/2828202.html
相关试题推荐
Recently,theUnitedNationsscientificpanelstudyingclimatechangedeclar
Recently,theUnitedNationsscientificpanelstudyingclimatechangedeclar
Recently,theUnitedNationsscientificpanelstudyingclimatechangedeclar
Change--ortheabilityto______(使自己适应变化中的环境)--isessentialtoevolution.adapt
QuickChangeinStrategyforaBooksellerInthemovieY
QuickChangeinStrategyforaBooksellerInthemovieY
QuickChangeinStrategyforaBooksellerInthemovieY
QuickChangeinStrategyforaBooksellerInthemovieY
WhyYouCan’tIgnoretheChangingClimate
WhyYouCan’tIgnoretheChangingClimate
随机试题
[originaltext]M:[12]Canyoutellmesomethingabouttheuniversityshuttlebus
Thethiefwhobrokeintothechurchwascaughtbecausetracesofwax,foundonh
下面能实现NAT的是()。A.DNS服务器 B.代理服务器 C.FTP
Windows中文件窗口移动时应拖动()。A、窗口边框 B、窗口任
根据旅游活动的风险程度,对旅行社、住宿、旅游交通以及我国《旅游法》规定的高风险旅
A.炒炭B.土炒C.醋制D.酒制E.姜制可增强大黄止血功效的炮制方法是
脑脊液在1~2小时内形成块状凝固见于A:蛛网膜下腔梗阻B:神经梅毒C:结核性
下列关于量化分析法的说法,不正确的是()。A:它是利用统计、数值模拟和其他定量模
提高深层淤泥质土的承载力可采取()。A.固结灌浆 B.喷混凝土护面 C
左锁骨上窝发现浅表淋巴结肿大的临床意义是什么?
最新回复
(
0
)