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
79
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
【C4】
选项
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/dMi7777K
0
大学英语四级
相关试题推荐
故宫(theForbiddenCity)位于北京市中心,是中国乃至世界现存规模最大、最完整的古代皇家建筑群(complex)。1406年动工兴建,耗时14年建成,距今已有580多年的历史。从明清两代开始,共有24位皇帝曾在这里生活居住。故宫建筑群极好地
InLondon,overhalfofthehomesbuiltbetween1919and1980hadonegarage.Butmanyarebecomingneedless.Between2002and2
Infact,evenwithouthumans,theEarth’sclimatechanges.Someclimatechangeis【C1】______.But,asgreenhousegasesareadded
Infact,evenwithouthumans,theEarth’sclimatechanges.Someclimatechangeis【C1】______.But,asgreenhousegasesareadded
A、Eatsomethingelse.B、Loseweightsoon.C、Temptthemantoeatsomething.D、Buysomecandiesherself.B
Asmenage,theytypicallygetlessandlessdeepsleep—afactthatcould【B1】______theweightgainthatoften【B2】______middle
Asmenage,theytypicallygetlessandlessdeepsleep—afactthatcould【B1】______theweightgainthatoften【B2】______middle
A、Between$400and$450.B、Between$4,800and$5,400.C、Between$2,400and$2,700.D、Between$800and$900.B该对话的关键部分是“每个月400—45
A、Seeadoctor.B、Stayinbedforafewdays.C、Gettreatmentinabetterhospital.D、Makeaphonecalltothedoctor.A女士提到,Car
A、Seeadoctor.B、Stayinbedforafewdays.C、Gettreatmentinabetterhospital.D、Makeaphonecalltothedoctor.A女士提到,Car
随机试题
抗日民主政权干部奖励的方式有()
已知线性方程组在方程组有无穷多个解时,求出方程组的通解(要求用其一个特解和导出组的基础解系表示).
患者身热,微恶风,汗少,肢体酸重,头昏重胀痛,咳嗽痰黏,鼻流浊涕,心烦,口渴,舌苔薄黄而腻,脉濡数。治疗应首选( )。
A.湿热蕴结B.气滞血瘀C.寒湿阻络D.气血两虚E.痰湿凝聚猫眼疮患者,皮损暗红,遇寒加重,下肢沉重,关节痛,小便清长,舌淡,苔白脉沉。辨证为()
男,24岁,车祸导致颈椎骨折,病人颈部疼痛,呼吸费力,四肢瘫痪。护士向家属介绍探视制度,属于
【2011—3】题11~15:某用户根据负荷发展需要,拟在厂区内新建一座变电站,用于厂区内10kV负荷的供电。该变电站电源取自地区110kV电网(无限大电源容量),采用2回110kV架空专用线路供电。变电站基本情况如下:(1)主变采用两台三相双卷自冷型油
某脱粒机厂(增值税一般纳税人)2005年10月生产销售农用脱粒机取得不含税销售收入80万元,为农民修理脱粒机取得修理费收入10万元,当月购进零配件,增值税专用发票上注明的税款为8.5万元(零配件已验收入库),则该厂本月应纳的增值税税额为( )。
制定内部转移价格时,如果选择参照协商价格,则其下限是()。
人民检察院提起公诉的案件,应当向人民法院移送主要证据的复印件或者照片,对于适用简易程序的公诉案件,人民检察院可以派员也可以不派员出庭,则以下人民检察院做法正确的是()。
天上的云,真是姿态万千,变化无常。它们有的像羽毛,轻轻地飘在空中:有的像鱼鳞,一片片整整齐齐地排列着;有的像羊群,来来去去;有的像一床大棉被,严严实实地盖住了天空;还有的像峰峦,像河流,像雄狮,像奔马……它们有时把天空点缀得很美丽,有时又把天空笼罩得很阴森
最新回复
(
0
)