SSS 2010-12-09

This is Scientific Americans 60-Second Science. Im Christopher Intagliata. Got a minute? Imagine climbing diamond mountains, or hiking around the graphite shores of a lake of tar. Sound a little sci-fi? Well a new discovery suggests planets like that

发表于:2019-01-08 / 阅读(311) / 评论(0)

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VOA慢速英语2010年-Education Report - A High School Offer

This is the VOA Special English Education Report. Most American schools have boys and girls in the same classroom. But a public high school in the small, rural town of Boonsboro, Maryland, offers a special program. Top students in the ninth and tenth

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VOA标准英语2011--Economy, Post Office Woes Force Iowa Tow

Economy, Post Office Woes Force Iowa Town off Map The United States Postal Service is facing unprecedented financial losses. Postmaster General Patrick Donahoe recently told lawmakers his agency needed government intervention by the end of the year t

发表于:2019-01-13 / 阅读(232) / 评论(0)

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职业技术英语口语第87期:环境问题法规

Legislation 法规 A: Has your company been affected much by government legislation? A:政府法规对你们公司影响大吗？ B: Yes, we have. We've had to clean up our production process a lot to meet tough government standards. B:是。为了严格

发表于:2019-01-14 / 阅读(241) / 评论(0)

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VOA标准英语2010年-No Girls Allowed: Public School Tries

In public high schools across America, large classes containing a mix of both boys and girls are the norm. However, in a move that's drawing high marks from students, one public school in Maryland has decided to buck that tradition. Class experimentA

发表于:2019-02-05 / 阅读(312) / 评论(0)

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万物简史第307期:地下的烈火(15)

So how much do we know about what's inside the Earth? Very little. 因此说，我们对地球的内部情况究竟了解多少？很少。 Scientists are generally agreed that the world beneath us is composed of four layers, 科学家们普遍认为，

发表于:2019-02-25 / 阅读(226) / 评论(0)

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