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This is Scientific American Sixty Seconds Science, I'm Sophie Bushwick, got a minute? When Mexican tetra fish moved into darker caves long ago, they evolved to deal with the dark by becoming albino and going blind. A new research shows that the chang
Scientific American(一)月
Hundreds of thousands of people in Bangladesh, victims of the worst cyclone to hit the country in a decade were desperately awaiting aid on Monday as the official death toll climbed to over three thousand. With relief aid pouring in, rescue teams ba
国家地理2008年
T Tanshinone IIA 丹参酮IIA Tanshinone I 丹参酮I Tanshinone IIB 丹参酮IIB Taraxasterol 蒲公英甾醇 Taraxerol 蒲公英赛醇 Tauro ursodesoxy cholic acid 牛磺熊去氧胆酸 Taxifolin 花旗
医务英语
By Margaret Besheer United Nations 19 May 2008 U.N. Secretary-General Ban Ki-moon goes to Burma Thursday, where he plans to visit some of the hardest hit areas of the cyclone-devastated country and meet with the reclusive regime's top leaders. The U.
VOA标准英语2008年（五月）
By Delia Robertson Johannesburg 25 February 2008 Cyclone Ivan, the worst to hit Madagascar in several years, has claimed at least 44 lives, and left 145,000 people homeless. VOA's Delia Robertson reports from our southern Africa bureau in Johannesbur
VOA常速英语2008年（二月）
10 Getting The Lead Out 第十章 把铅撵出去 In the late 1940s, a graduate student at the University of Chicago named Clair Patterson (who was, first name notwithstanding, an Iowa farm boy by origin) was using a new method of lead isotope measur
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