穴居人的消亡可能与狩猎工具的出现无关-凯发k8官网

穴居人的消亡可能与狩猎工具的出现无关
文章来源:未知 文章作者:enread 发布时间:2015-04-29 06:41 字体: [ ] 
(单词翻译:双击或拖选)
the 1 of neanderthals may have nothing to do with 2 hunting weapons carried by humans from west asia, according to a new study published in the journal of human evolution. the researchers, from nagoya university and the university of tokyo, japan, say their findings mean that we may need to rethink the reasons humans survived neanderthals -- and that we may not have behaved as differently as we thought. the researchers looked at innovative stone weapons used by humans about 42,000-34,000 years ago. traditionally, anthropologists believed that innovation in weapons enabled humans to spread out of africa to europe. however, the new study suggests that the innovation was not a driving force for humans to migrate into europe as 3 thought -- they were no better equipped than the neanderthals.
 
"we're not so special, i don't think we survived neanderthals simply because of 4 competence," said dr. seiji kadowaki, first author of the study from nagoya university, japan. "our work is related to the processes behind the global spread of modern humans, and specifically the cultural impact of the modern humans who migrated to europe."
 
anatomically modern humans expanded the 5 area they inhabited out of africa during a period of time 55,000-40,000 years ago -- this event made a huge impact on the biological origin of people living today. there are other theories for the 6 spread of anatomically modern humans, but this is generally accepted as a major event in human history.
 
previous models assumed that anatomically modern humans -- our direct ancestors -- were special in the way they behaved and thought. these models considered technological and cultural innovation as the reason humans survived and neanderthals did not.
 
there has always been a big question around the demise of the neanderthals -- why did they disappear when humans survived? we have a similar 7, so researchers traditionally thought there must have been differences in the way neanderthals and humans behaved. the new study suggests that humans moved from west asia to europe without a big change in their behavior.
 
the researchers studied stone tools that were used by people in the early ahmarian culture and the protoaurignacian culture, living in south and west europe and west asia around 40,000 years ago. they used small stone points as tips for hunting weapons like throwing spears. researchers previously considered these to be a significant innovation -- one that helped the humans migrate from west asia to europe, where neanderthals were living.


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1 cmazg     
n.死亡;v.让渡,遗赠,转让
参考例句:
  • he praised the union's aims but predicted its early demise.他赞扬协会的目标,但预期这一协会很快会消亡。
  • the war brought about the industry's sudden demise.战争道致这个行业就这么突然垮了。
2 d6vxq     
adj.革新的,新颖的,富有革新精神的
参考例句:
  • discover an innovative way of marketing.发现一个创新的营销方式。
  • he was one of the most creative and innovative engineers of his generation.他是他那代人当中最富创造性与革新精神的工程师之一。
3 bkzzzc     
adv.以前,先前(地)
参考例句:
  • the bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
  • let me digress for a moment and explain what had happened previously.让我岔开一会儿,解释原先发生了什么。
4 gqiwy     
adj.技术的;工艺的
参考例句:
  • a successful company must keep up with the pace of technological change.一家成功的公司必须得跟上技术变革的步伐。
  • today,the pace of life is increasing with technological advancements.当今, 随着科技进步,生活节奏不断增快。
5 tgsxb     
adj.地理学的,地理的
参考例句:
  • the city's success owes much to its geographic position. 这座城市的成功很大程度上归功于它的地理位置。 来自《简明英汉词典》
  • environmental problems pay no heed to these geographic lines. 环境问题并不理会这些地理界限。 来自英汉非文学 - 环境法 - 环境法
6 cgjxb     
adj.地理的;地区(性)的
参考例句:
  • the current survey will have a wider geographical spread.当前的调查将在更广泛的地域范围內进行。
  • these birds have a wide geographical distribution.这些鸟的地理分布很广。
7 cwgzh     
n.解剖学,解剖;功能,结构,组织
参考例句:
  • 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。
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