首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Hungry prehistoric hunters, not climate change, drove elephants to extinction during the Pleistocene era (更新世), new research sug
Hungry prehistoric hunters, not climate change, drove elephants to extinction during the Pleistocene era (更新世), new research sug
admin
2020-02-21
17
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【C1】______to wander about the African, Eurasian, and American continents. Today, only two【C2】______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,【C3】______vegetation and broke up habitats (栖息地), causing the death of those unable to adapt to the new conditions. Another【C4】______blames prehistoric humans, whose improved weapons and hunting techniques allowed them to wipe out whole herds of elephants.
To help【C5】______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【C6】______regions should match human expansion into those regions. On the contrary, if the extinction was【C7】______to climate change, elephants should remain in regions【C8】______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【C9】______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 rerfuges【C10】______to humans, such as tropical forests, says Surovell.
A. uninviting B. migrated C. declined D. due
E. memorial F. specific G. already H. casually
I. hypothesis J. endurance K. resolve L. polish
M. altered N. used O. species
【C6】
选项
答案
F
解析
此处需要形容词作定语,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://jikaoti.com/ti/mC0FFFFM
0
大学英语四级
相关试题推荐
Nearly5,000peoplebelowtheageof21diebecauseofexcessivealcoholconsumptioneachyear.Oddly,thishastriggeredanew
HowAdvertisementIsDone?A)Whenwechooseawordwedomorethangiveinformation;wealsoexpressourfeelingsaboutwha
ANiceCupofTeaTheLegendaryOriginsofTeaA)ThestoryofteabeganinancientChinaover5,000yearsago.Accordingto
TheInternetisaninternationalcollectionofcomputernetworksthatallunderstandastandardsystemofaddressesandcommands
A"memorypill"thatcouldaidexamrevisionandhelptopreventpeopleforgettingimportantanniversariesmaysoonbeavailable
I’musuallyfairlyskepticalaboutanyresearchthatconcludesthatpeopleareeitherhappierorunhappierormoreorlesscerta
A、Withdrawasmuchmoneyfromthebankashewishes.B、Obtainmoreconvenientservicesthanotherpeopledo.C、Enjoygreatertru
A、Theyshouldhelpmaintaintheequipment.B、Theyshouldkeepawatchfuleyeontheirchildren.C、Theyshouldstoptheirchildre
A、ParentsinBritainaretoogenerous.B、ParentsinBritainmakemoremoney.C、ParentsinBritainlovetheirchildrentoomuch.
A、Toshowhowsimplethemechanicalaidsfordivingcanbe.B、Toprovidereasonsforhischangeablecharacter.C、Toexplorethe
随机试题
体积为8.20×10-3m3,压强为1.01325×105Pa的氮气,在压强不变的条件下,从温度为300K加热至温度为400K,则所需的热量为()。
某单位的财务人员买了甲、乙、丙三本工具书,这三本书的封面不一样,有红色、有黄色、有蓝色。其中,丙书的价格比黄色封面的书的价格要高,甲书和蓝色封面的书的价格不一样,蓝色封面的书的价格比丙书的价格要低。据此,可以推出甲、乙、丙三本书的封面颜色分别为(
决定个体的外显行为和内隐行为并使其与他人的行为有稳定区别的综合心理特征称之为自我。()
移动通信一般使用甚高频(VHF)传输。()
公安机关在紧急处置重大灾害事故或者平息叛乱时,在不得已的情况下所采取的非常措施是()。
根据所给文字资料回答以下问题。2008年1~5月份,我国规模以上工业企业(年主营业务收入500万以上的企业,下同)实现利润10944亿元,同比增长20.9%。在规模以上工业企业中,国有及国有控股企业实现利润424.6亿元,同比增长1.5%;集体企业实
根据下列材料回答问题。从2014年起,我省在粤东西北地区以县(市、区)为单位遴选首批14个省级新农村连片示范建设工程,三年将建成42个省级新农村示范片(不含珠三角地区)。根据工作进度安排,示范片建设一年初见成效,两年基本实现目标。与此同时,珠三角
某书店老板去图书批发市场购买某种图书,第一次进书用100元,按该书定价2.8元出售,很快售完。第二次进书时,每本的进价比第一次增加0.5元,用去150元,所购数量比第一次多10本。这批书按定价售出时出现滞销,便以定价的5折售完剩余图书。那么他第二次售书可能
下面心理学技术或原理是以强化理论为基础的是
Thestudentwrotea______report.
最新回复
(
0
)