This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. They say what doesn't kill you makes you stronger. But sometimes what makes you stronger can kill you, at least when it comes to blood clotting. Because

发表于:2019-01-08 / 阅读(65) / 评论(0) 分类 Scientific American(十一)月

必备知识4:一些必要的词根(stems) -anthro-,-anthropo- human anthropology -aster-,-astro-,-stellar- star asterisk -audi-,-audit- hear audience -auto- self autograph -bio- life biology -capit- head, chief capital, captain -ced-go, move,yield p

发表于:2019-01-08 / 阅读(128) / 评论(0) 分类 雅思英语

By Martin Secrest Washington, D.C. 26 January 2007 watch Bird Flu report New outbreaks of bird flu are causing concern in Asia. Since the beginning of the year, there have been new bird flu cases in Thailand, Vietnam, and China. Indonesian authoriti

发表于:2019-01-13 / 阅读(80) / 评论(0) 分类 2007年VOA标准英语(一月)

The geology of the planet 地球的地质情况 Welcome to the Anthropocene 欢迎来到人类纪 Humans have changed the way the world works. Now they have to change the way they think about it, too 人类改变了世界运行方式,现在,人类不

发表于:2019-01-26 / 阅读(74) / 评论(0) 分类 经济学人综合

By Lisa Bryant Paris 15 February 2006 Experts meeting in Brussels Wednesday and Thursday are promoting a series of measure to fight the spread of bird flu in the European Union. The meeting comes as n

发表于:2019-01-31 / 阅读(77) / 评论(0) 分类 2006年VOA标准英语(二月)

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发表于:2019-02-06 / 阅读(79) / 评论(0) 分类 英文语法词汇