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
2024-02-29
27
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] 【S3】
选项
答案
M
解析
根据上文所说“气候急剧变化”,可知altered正确,意指“改变植被”。
转载请注明原文地址:https://tihaiku.com/zcyy/3493200.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
BritishColumbiahasgreatervariationsinclimatethananyotherprovinceinCa
BritishColumbiahasgreatervariationsinclimatethananyotherprovinceinCa
BritishColumbiahasgreatervariationsinclimatethananyotherprovinceinCa
BritishColumbiahasgreatervariationsinclimatethananyotherprovinceinCa
随机试题
"GeothermalEnergy"→Geothermalenergyisnaturalheat
Advertiserswillhaveaudienceofnearly145million【M1】______peoplef
[originaltext]M:Hello,Janet.I’mgladtoseeyouback.Didyouhaveaniceho
[originaltext]W:Oh,Rex,Ihavebeenlookingforyouforhours.Wherehaveyou
Hecopiedotherpeople’sideasinwritin
因工伤发生的下列费用,不能从工伤保险基金中支付的是:A.治疗工伤的医疗费用和康复
夹具是先张法预应力混凝土施工的临时性锚固装置。()
在要求有抗静电、抗冲击和传爆长度较大洞室爆破时,应采用的方法是( )。A、电力
下列哪项不属于货币市场()A.回购市场 B.票据市场 C.大面额可转让存单
招标人在招标文件中一般会明确进行工程现场踏勘的( )。 A、时间和地点
最新回复
(
0
)