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
A new study suggests that the close interspecies bond that exists between humans and dogs may extend 27 000 or even 40 000 years
A new study suggests that the close interspecies bond that exists between humans and dogs may extend 27 000 or even 40 000 years
admin
2017-04-28
86
问题
A new study suggests that the close interspecies bond that exists between humans and dogs may extend 27 000 or even 40 000 years back. That’s a【C1】______jump from 11 000 to 16 000 years ago, when dogs were【C2】______thought to have split from their wolf ancestors.
Led by Harvard research fellow Pontus Skoglun, the authors of the study【C3】______DNA belonging to a 35 000-year-old Siberian wolf specimen. Their genomic analysis led them to【C4】______that the wolf was part of a population "that diverged from the common ancestor of present-day wolves and dogs very close in time to the【C5】______of the domestic dog lineage," according to an abstract.
That means domesticated dogs may have been hanging out with humans during that same era, more than 20 000 years ago. The【C6】______for this finding was the discovery of the ancient bone, the abstract notes: The researchers made these【C7】______based on a small piece of bone picked up during an expedition to the Taimyr Peninsula in Siberia. Initially, they didn’t realize the bone fragment came from a wolf at all; this was only【C8】______using a genetic test back in the laboratory. But wolves are common on the Taimyr Peninsula, and the bone could have easily【C9】______to a modern-day wolf. On a hunch, the researchers decided to radiocarbon date the bone anyway. It was only then that they realized what they had: a 35 000-year-old bone from an【C10】______Taimyr wolf.
A)ancient F)discoveries K)inventions
B)appearance G)dramatic L)preview
C)belonged H)examined M)previously
D)conclude I)impetus N)seldom
E)determined J)increasingly O)sudden
【C3】
选项
答案
H
解析
转载请注明原文地址:https://kaotiyun.com/show/OMi7777K
0
大学英语四级
相关试题推荐
A、Theyarenaturalandhealthyfood.B、Theyhelppeopleloseweight.C、Theyarelowestincalories.D、Theyarepopularwithmost
A、Itpreventsthemfrombecomingoverweight.B、Itremovesworriesandunhappiness.C、Itprotectsthemfromillnesses.D、Itcanh
InLondon,overhalfofthehomesbuiltbetween1919and1980hadonegarage.Butmanyarebecomingneedless.Between2002and2
Infact,evenwithouthumans,theEarth’sclimatechanges.Someclimatechangeis【C1】______.But,asgreenhousegasesareadded
Infact,evenwithouthumans,theEarth’sclimatechanges.Someclimatechangeis【C1】______.But,asgreenhousegasesareadded
Infact,evenwithouthumans,theEarth’sclimatechanges.Someclimatechangeis【C1】______.But,asgreenhousegasesareadded
Infact,evenwithouthumans,theEarth’sclimatechanges.Someclimatechangeis【C1】______.But,asgreenhousegasesareadded
Havingacreativeoutlethaslongbeenconsideredgoodforyourwell-being,butanewstudysuggestsitwillhelpyoubebetter
随机试题
电气技术文字符号分为基本文字符号和辅助文字符号两类。基本文字符号主要表示电气设备、装置和元器件的种类名称,分为单字母符号和双字母符号。双字母符号中,表示按钮开关的是()。
4月10日,气温14~24.5℃,兽医院接诊一病马,体温38.9℃。主诉该马一直采用当地的采割的杂草为主饲喂,精料以玉米粉为主;最近总是刨蹄,常卧地四肢伸直,精神越来越差,粪便干硬,今晨屡现起卧症状,不吃料草。临检发现该马体况一般,耳鼻四肢温热,举尾呈现排
38岁黑龙江妇女,轻微活动后即感气促、胸闷,临床检查发现其心脏扩大,心律失常,红细胞谷胱甘肽过氧化物酶活力下降,其最有可能缺乏的是
下列各项,提示胎儿储备能力异常的项目是()
非诺贝特属于()。
甲、乙涉嫌非法拘禁罪被取保候审。本案提起公诉后,法院认为对甲可继续适用取保候审,乙因有伪造证据的行为而应予逮捕。对于法院适用强制措施,下列哪些选项是正确的?()
DRAM存储器的中文含义是()。
房地产开发的条件有()。
政府机构构成的六要素中,属于政府机构行使行政权力、履行行政职责的物质基础是()。
西部某地区为吸引青年学子回家工作。打算举办一次新年团拜会。借此机会向青年学子介绍家乡的发展,吸引他们回家,请问你如何组织?
最新回复
(
0
)