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 su
Hungry prehistoric hunters, not climate change, drove elephants to extinction during the Pleistocene era (更新世), new research su
admin
2010-04-12
70
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
【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://www.kaotiyun.com/show/Gmj7777K
0
大学英语四级
相关试题推荐
Whatisthemostimportantdifferencebetweenhappypeopleandunhappypeople?Thephrase"sourthepleasureofsociety"mostp
A、Getsomebooksforthemantolookat.B、Askthemantolookoverhernotes.C、Continueherresearchinthelibrary.D、Findmo
Accordingtothetext,childrenwhogetautismmaysufferfrom______.InItaly,thechancesforyoungchildrentoreceiveserv
A、Biology.B、Chemistry.C、Philosophy.D、Medicine.C[听力原文]Whichsubjectdothestudentswhowanttobecomedoctorsnotstudy?信息
Thoughshehasboughtmanyclothes,sheisalways__________(抱怨缺少合适的衣服).
A、K10-15.B、K20-24.C、E10-12.D、F1-3.BWhatarethefamily’sseatnumbers?此题考查听特定信息的能力,解题关键是要听到SeatnumbersK20-24,考生还应注意数字辨音的速
A、Becausemostcomputercriminalsaremajoremployees.B、Becausemanyemployeesusecomputerstostealmoney.C、Becausetheydo
A、Attendthebirthdayparty.B、Missthebirthdayparty.C、Gohomebeforebirthdayparty.D、Feelunhappyattheparty.A[听力原文]M:
WesternattitudestowardsthesocietiesofEastAsiaareasadreflectionofaninabilitytoappreciatetheeconomicachievement
TheKillerSmogCasesofKillerSmogsOnthenightofDecember1st,1930,adensefogmovedovertheMeuseValley,inBe
随机试题
可出现昏迷的是下列哪种疾病
患者发热,咳嗽,胸痛,咯吐腥臭浊痰,甚则脓血相兼,其诊断为:
下列栓剂基质中,具有同质多晶性的是
为配制注射剂用的溶剂是
政府通过财政政策,调节社会总需求和总供给,实现总供需的平衡和结构平衡,进而实现国民经济的又好又快发展。这是指财政政策的()。
某公司向银行借款10000元,期限3个月,年利率5%,到期一次还本付息,则到期时,该项借款的账面价值为()元。
依次填入画横线部分最恰当的一项是()。①这几年新建的楼房_______,使这座城市更加繁荣。②文艺晚会上他们把自己的表演才能发挥得_______。③现在到人才市场应聘的人虽然很多,但_______,用人单位要找到真正能
2022年,人社部和国家医保局“总对总”通道正式开通,支持电子社保卡和医保电子凭证在就医购药领域并行使用。下列关于社保卡的相关说法,错误的是()。
TASKONE—JOB•Forquestions13—17,matchtheextractswiththecorrespondingjob,listedA—H.•Foreachextract,choosethejob
Whywork?【C1】______youhaveperiodicallyaskedyourselfthesamequestion,perhapsfocusedon【C2】______youhavetowork.Serf-
最新回复
(
0
)