This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Conscious planning for the future was thought to be a cognitive behavior unique to humans. Not anymore. Researchers in Sweden have found a zoo chimp th

发表于:2019-01-05 / 阅读(60) / 评论(0) 分类 Scientific American(三)月

Graph Search的理念在于,以谷歌搜索引擎发掘互联网信息的方式,发掘Facebook网站社交图谱的含义。Graph Search扩展了Facebook的核心使命:不仅帮助用户与已知的他人建立联系,还能成为一款发现工

发表于:2019-01-05 / 阅读(61) / 评论(0) 分类 英语新闻视频

It started with a simple experiment: take some graphite - the black stuff in the middle of a pencil - and put a piece of tape over it. When the scientists at the University of Manchester did that, they found that they could develop a material that co

发表于:2019-01-14 / 阅读(76) / 评论(0) 分类 VOA标准英语2010年(十)月

Graphene Called Amazing, Versatile Material of the Future 前景光明的多功能材料石墨烯 In 2004, two scientists at the University of Manchester in England isolated a carbon-based material called graphene, with some unusual properties. Andre

发表于:2019-01-14 / 阅读(63) / 评论(0) 分类 VOA标准英语2014年(二月)

后缀在缀合法中只起改变词性的作用,不改变词根的含意,这在第一章内已叙述。现将常用后缀分一般英语后缀及医学英语后缀两部分来说明。因词性不同、后缀可分为名词性、形容词等。 一、名词性后缀 1、-age为抽象名词后缀,表示行为,状态和全体总称,percentage百分数,

发表于:2019-02-13 / 阅读(47) / 评论(0) 分类 英文语法词汇

英语单词和汉字一样,存在着很多的偏旁部首字根,知道了字根你就可以根据它们直接来猜测单词的意思,虽不说百分之百猜准,但起码可以猜测个大概,至少在别人告诉过你单词的意思后你

发表于:2019-02-19 / 阅读(34) / 评论(0) 分类 英语学习方法