2013年职称英语理工类A新增文章及答题技巧2013年职称英语理工类A新增文章及答题技巧.doc
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2013年职称英语理工类考试教材新增文章目录及内容下载汇总第四部分 阅读理解(变化了3篇) 第六部分 完形填空(变化了3篇) 具体名称如下: 阅读理解: 第十一篇:When Our Eyes Serve Our Stomach 第十九篇:Musical Robot Companion Enhances Listener Experience +第四十八篇:Researchers Discover Why Humans Began Walking Upright 完型填空: 第三篇:Giant Structures 第八篇:Why India Needs Its Dying Vultures +第十三篇:Better Solar Energy Systems: More Heat, More Light+第四十八篇 Researchers Discover Why Humans Began Walking Upright
Most of us walk and carry items in our hands every day. These are seemingly simple activities that the majority of us don’t question. But an international team of researchers, including Dr. Richmond from GWs Columbian College of Arts and Sciences,have discovered that human walking upright, may have originated millions of years ago as an adaptation to carrying scarce, high- quality resources. The team of researchers from the U. S., England, Japan and Portugal investigated the behavior of modern-day chimpanzees as they competed for food resources,in an effort to understand what ecological settings would lead a large ape — one that resembles the 6 million-year old ancestor we shared in common with living chimpanzees — to walk on two legs.
“These chimpanzees provide a model of the ecological conditions under which our earliest ancestors might have begun walking on two legs, ,said Dr. Richmond.
The research findings suggest that chimpanzees switch to moving on two limbs instead of four in situations where they need to monopolize a resource. Standing on two legs allows them to carry much more at one time because it frees up their hands. Over time,intense bursts of bipedal activity may have led to anatomical changes that in turn became the subject of natural selection where competition for food or other resources was strong.
Two studies were conducted by the team in Guinea. The first study was conducted by the team in Kyoto University’s “ outdoor laboratory ” in a natural clearing in Bossou Forest. Researchers allowed the wild chimpanz
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