时间:2019-01-12 作者:英语课 分类:VOA标准英语2008年(三月)


英语课
By Jessica Berman
Washington
21 March 2008


Scientists have concluded that the world's oldest primate 1 fossil known as the Millennium 2 Ancestor belongs to a group that includes prehistoric 3 humans rather than apes. Investigators 4 studying the remains 5 have determined 6 that the six-million-year-old species walked upright, a characteristic that separated human ancestors from apes. VOA's Jessica Berman reports.


Ever since the fossil of the six million year old Millennium Ancestor was discovered in Kenya by French paleoanthropologists in 2000, scientists have debated whether it belonged to the family of prehistoric apes or humans.


An independent team of researchers led by Brian Richmond of George Washington University in Washington, D.C. studied the upper thighbone of the Millennium Ancestor.


Investigators used a statistical 8 method to compare the fossil to 300 thighbones from great apes and modern humans as well as fossilized human ancient remains.


Richmond says it appears the Millenneum Ancestor walked upright, a characteristic possessed 9 by prehistoric humans and one that marked the divergence 10 with apes some two million years ago.


Richmond says the evidence can be seen in the hip 11 bone of the Millennium Ancestor.


"It doesn't look anything like a modern or a fossil ape," he said. "So we know that this thigh 7 bone was adapted to upright walking on two legs all the way six million years ago."


But Richmond says the Millennium Ancestor is not a direct ancestor of prehistoric humans.


Rather, Richmond says it appears to be related to a diverse family of human-like primates 12 that arose in Africa much later.


"At six million years ago, the fossil looked so similar to things that are two and three million years ago that it suggests when our early ancestors started walking upright, they evolved a hip anatomy 13 that remained stable for about four million years for the majority of human evolutionary," he explained. " And there weren't further changes until two million years with the origin of our own genus homo."


Richmond's paper on the Millennium Ancestor is published in the journal Science.




n.灵长类(目)动物,首席主教;adj.首要的
  • 14 percent of primate species are highly endangered.14%的灵长类物种处于高度濒危状态。
  • The woolly spider monkey is the largest primate in the Americas.绒毛蛛猴是美洲最大的灵长类动物。
n.一千年,千禧年;太平盛世
  • The whole world was counting down to the new millennium.全世界都在倒计时迎接新千年的到来。
  • We waited as the clock ticked away the last few seconds of the old millennium.我们静候着时钟滴答走过千年的最后几秒钟。
adj.(有记载的)历史以前的,史前的,古老的
  • They have found prehistoric remains.他们发现了史前遗迹。
  • It was rather like an exhibition of prehistoric electronic equipment.这儿倒像是在展览古老的电子设备。
n.调查者,审查者( investigator的名词复数 )
  • This memo could be the smoking gun that investigators have been looking for. 这份备忘录可能是调查人员一直在寻找的证据。
  • The team consisted of six investigators and two secretaries. 这个团队由六个调查人员和两个秘书组成。 来自《简明英汉词典》
n.剩余物,残留物;遗体,遗迹
  • He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
  • The remains of the meal were fed to the dog.残羹剩饭喂狗了。
adj.坚定的;有决心的
  • I have determined on going to Tibet after graduation.我已决定毕业后去西藏。
  • He determined to view the rooms behind the office.他决定查看一下办公室后面的房间。
n.大腿;股骨
  • He is suffering from a strained thigh muscle.他的大腿肌肉拉伤了,疼得很。
  • The thigh bone is connected to the hip bone.股骨连着髋骨。
adj.统计的,统计学的
  • He showed the price fluctuations in a statistical table.他用统计表显示价格的波动。
  • They're making detailed statistical analysis.他们正在做具体的统计分析。
adj.疯狂的;拥有的,占有的
  • He flew out of the room like a man possessed.他像着了魔似地猛然冲出房门。
  • He behaved like someone possessed.他行为举止像是魔怔了。
n.分歧,岔开
  • There is no sure cure for this transatlantic divergence.没有什么灵丹妙药可以消除大西洋两岸的分歧。
  • In short,it was an age full of conflicts and divergence of values.总之,这一时期是矛盾与价值观分歧的时期。
n.臀部,髋;屋脊
  • The thigh bone is connected to the hip bone.股骨连着髋骨。
  • The new coats blouse gracefully above the hip line.新外套在臀围线上优美地打着褶皱。
primate的复数
  • Primates are alert, inquisitive animals. 灵长目动物是机灵、好奇的动物。
  • Consciousness or cerebration has been said to have emerged in the evolution of higher primates. 据说意识或思考在较高级灵长类的进化中已出现。
n.解剖学,解剖;功能,结构,组织
  • He found out a great deal about the anatomy of animals.在动物解剖学方面,他有过许多发现。
  • The hurricane's anatomy was powerful and complex.对飓风的剖析是一项庞大而复杂的工作。
学英语单词
Aluminostomy
annonaceous
anomalous Green function
ataxia telangiec tasia syndrome
axinost (or axonost)
beach slope
biker
body block
caretaker speech
CAT (control and test)
Cervulus
characteristic impedance of lossless line
coal hulk
coarse thread tap
cockled
colpohyperplasia emphysematosa
computer operating system
continuous-way control
Coral Gables
cork tree
cost-volume-profit graph
cowessess
dari
day corrector knob
disarticulating
dress-conscious
dyaus-pitars
epidemic urticaria
exhaust-valve cam
fast combat support ship
fetid horehounds
flat sector magnet
foam rubber products
fog effect
Ghaddaffi
gram centimeter
great crested newt
heartstrings
htel
hydroperoxidation
image composition
intracellulare
johany
knowlege
law of diminishing marginal rate of technical substitution
letterhack
line light source
long - playing record
lop sth off
low rental
mail stops
Medifome
michiel
moisture suction
multiprogrammed computation
musculi adductor hallucis
nitida
no laughing matter
outframing
P-Celtic
particular Churches
plesiomorphically
plumbous metaplumbate
polyphase heating r
povlsen
pre-pilot
Priargunsk
primal cluster
Primula orbicularis
projection Ektar lens
public administration review (par)
quick service
rainmeter
raveling
red whortleberry
reducing roasting
reprovingly
Ricardo, David
river valley
sapere aude
scalar flux
sclerenchymous fibre
sclerification
segment mode
setback capacity
silk throwing
spiculating
Student's t test
subdeaconry
The biter is sometimes bit.
the way of the worlds
Thrixspermum pensile
Tom Sawyering
transmigrable
triode field effect transistor
urgent-care
vulgariser
wb (wide band)
wles
zucco