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This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Why do some chords sound sweet but others make you wince? Well it appears our earsor at least the ears of 250 Minnesota undergradsprefer chords containing harm

发表于:2018-12-24 / 阅读(71) / 评论(0) 分类 Scientific American(五)月

By Nancy Steinbach Broadcast: August 13, 2003 This is Bill White with the VOA Special English Health Report. Health news and other scientific information generally comes from research published in the

发表于:2019-01-02 / 阅读(67) / 评论(0) 分类 VOA2003(下)-环境与健康

Engineered devices are all around us. From cell phones and computers to hybrid cars and deep-water oil platforms, advances in engineering are profoundly changing our lives. But concerns are growing that public understanding of how these technologies

发表于:2019-01-06 / 阅读(32) / 评论(0) 分类 VOA标准英语2010年(七)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Over the past 50 years more and more women have entered the work force. And theyre increasingly taking on jobs that have traditionally gone to men. Now

发表于:2019-01-08 / 阅读(51) / 评论(0) 分类 Scientific American(三)月

EXPLORATIONS - Koshland Science Museum By Broadcast: Wednesday, March 02, 2005 (MUSIC) VOICE ONE: I'm Steve Ember. VOICE TWO: And I'm Faith Lapidus with the VOA Special English program EXPLORATIONS. T

发表于:2019-01-10 / 阅读(273) / 评论(0) 分类 Explorations

Margaret Thatcher (nee Margaret Roberts) was born in 1925 in England. Her father owned two local grocery stores, which is where she first developed her business sense. The young Margaret had a strict religious upbringing. She studied chemistry and th

发表于:2019-02-19 / 阅读(26) / 评论(0) 分类 世界名人简介