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
52
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] 【S8】
选项
答案
G
解析
此处应该是状语成分,由副词充当。从上下文语义的逻辑性看,只有already合适。
转载请注明原文地址:https://tihaiku.com/zcyy/2828204.html
相关试题推荐
[originaltext]Exchangeaglancewithsomeone,thenlookaway.Doyourealiz
[originaltext]Exchangeaglancewithsomeone,thenlookaway.Doyourealiz
[originaltext]Exchangeaglancewithsomeone,thenlookaway.Doyourealiz
Asystematicapproachtothejobhuntandacareerchangeinvolvesknowingw
Asystematicapproachtothejobhuntandacareerchangeinvolvesknowingw
Asystematicapproachtothejobhuntandacareerchangeinvolvesknowingw
Asystematicapproachtothejobhuntandacareerchangeinvolvesknowingw
Asystematicapproachtothejobhuntandacareerchangeinvolvesknowingw
Asystematicapproachtothejobhuntandacareerchangeinvolvesknowingw
Asystematicapproachtothejobhuntandacareerchangeinvolvesknowingw
随机试题
ThesinglemostshatteringstatisticaboutlifeinAmericainthelate1990s
Painting,theexecutionofformsandshapesonasurfacebymeansofpigment,
[originaltext]OnehundredandthirteenmillionAmericanshaveatleastone
WhichofthefollowingsentencesexpressesWILLINGNESS?A、Bynowshewillbeeati
Biogas:aSolutiontoManyProblemsInalmostalldevelo
ADSL采用()技术在一对电话线上划分出上行信道和下行信道,使用ADSL拨号
蹦床运动员在离开蹦床一定高度后落回蹦床,若不考虑空气阻力,下列说法错误的是()A
下列选项中,属于深度知觉双眼线索的是A.线条透视 B.视轴辐合 C.运动视差
共用题干 某建筑工程公司拟开发经营项目,以期用该项目的收益补充公司生产任务不足
下列关于混凝土小型空心砌块砌体工程说法错误的有()。A.砌块砌筑的主要工序
最新回复
(
0
)