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
72
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
【S6】
选项
答案
F
解析
此处需要一个形容词做定语,修饰名词regions。根据上下文,specific合适,意为“特定地区”。
转载请注明原文地址:https://kaotiyun.com/show/Tmj7777K
0
大学英语四级
相关试题推荐
Rabbitearantennasareoldfashionedbutarestillinuse.CableTVshavegoodpicturesbutusersneedtopaytowatchthepro
ThepassagegivesadescriptionofthecontaminationinNewOrleansafterHurricaneKatrina.Todate,sixpeoplehavediedfrom
SecurityexpertswerenotsurprisedbytheFBI’swarninglastweekthatmorethan1millioncreditcardnumbershavebeenstolen
A、Tothesupermarket.B、Totherestaurant.C、Tothefitnessclub.D、Totheuniversity.AW:I’mmakingalist,havewerunoutof
A、Itwon’tbeanydifferentfromtheothers.B、Itwillbeunusuallymild.C、Itwon’taffectthehunters.D、Itwillprobablybec
Whatdoesthenewmechanismdotosolvetheproblemofunemployment?WhatisonereasonmentionedinthepassagethatRonhasn’
WhichofthefollowingisTRUEaboutmemory?Whatistheauthor’sviewaboutcomputersandhumanbeingsintermsofintelligenc
ExaminationshavealongerhistoryinChinathaninanyothercountry,yetitistodayanissuearoundinwhichcontroversyflou
WesternattitudestowardsthesocietiesofEastAsiaareasadreflectionofaninabilitytoappreciatetheeconomicachievement
A、HemovedtoBaltimorewhenhewasyoung.B、Hecanprovidelittleusefulinformation.C、HewillshowthewomanaroundBaltimore
随机试题
资源利用的优化主要包括()。
Ⅳ型高脂蛋白血症是指空腹血浆
法律规定的人民法院有权采取的强制执行措施,不含下列选项中的()。
某项目投资来源中,项目资本金3000万元,借入银行资金2000万元,建设期借款利息400万元。在编制项目财务现金流量表时,建设期现金流出的投资应为()万元。
产品定位的步骤如何理解?
(2014年)资料一C国蓝先生在D国攻读物理学硕士学位期间,兼职于D国一家光伏产业的公司,从事光伏组件的销售业务。蓝先生熟悉太阳能电池板零部件产品的销售渠道及客户群体,积累了丰富的销售经验及客户资源,善于搜集客户需求信息,并能够根据客户需求对产品提出
商业银行作为金融中介机构,其经营对象是()。
学生在操场上列队做操,只知人数在90-110之间。如果排成3排则不多不少:排成5排则少2人;排成7排则少4人。问学生人数是多少人?
计算∫Lxdy一(2y+1)dx,其中(1)L从原点经过直线y=x到点(2,2);(2)L从原点经过抛物线y=到点(2,2).
Australiansalwaystakegreatprideindisplayingtheirmateshiptoothers.Thiswasbuiltupbitbybitwhenthefirst【S1】_____
最新回复
(
0
)