氧磁铁矿；磁赤铁矿

OxyContin Warning

86 去痛片须慎用 DATE=8-16-01 TITLE=SCIENCE REPORT - OxyContin Warning BYLINE=Jerilyn Watson （Start at 1'02

发表于:2019-01-02 / 阅读(172) / 评论(0)

科技之光

VOA标准英语2010年-Sierra Leone Hopes to Become Africa's

Sierra Leone hopes to become Africa's biggest exporter of iron ore with the opening of a new mine in the central Tonkolili district. Geologists say the new mine holds more then five billion tons of iron ore. Before mining can begin at Tonkolili, geol

发表于:2019-01-13 / 阅读(110) / 评论(0)

VOA标准英语2010年(二月)

英语听力：自然百科地球力场 Earth's Force Field—14

By analyzing different samples of lava, Herrero / Bervera has built up a picture of how the filed has changed since long before humans were around. They are actually the recorders of the Earth's magnetic field in hundreds of years, thousands of years

发表于:2019-01-22 / 阅读(132) / 评论(0)

自然百科2011年

英语博客(A cup of English):083 A Foxy Chick.

Beginners. Well, it's time for a new dog. For the past year, we have been a one dog family. But, you know, our dog, Rosie, is a wildly social lady. She goes crazy any time she meets another dog, a cat, a mouse, or a bird, let alone a human. But, the

发表于:2019-01-28 / 阅读(146) / 评论(0)

英语博客 A cup of English

2007年VOA标准英语-Oxycontin Manufacturer Lied About Dangers of Dr

By Melinda Smith Washington 14 May 2007 Top executives of the company that makes a powerful painkiller called Oxycontin admitted this week they lied about the drug's addictive qualities in order to boost sales. As VOA's Melinda Smith reports, worldwi

发表于:2019-02-03 / 阅读(192) / 评论(0)

2007年VOA标准英语（五月）

英语博客(A cup of English):Vaccines for Foxy.

Beginners. Today, Foxy had an appointment with the vet for vaccinations and a general check-up. She is about eight months old, so she needed her second set of vaccinations. The vet also needed to see if her growth was normal and healthy. I put her in

发表于:2019-02-07 / 阅读(171) / 评论(0)

英语博客 A cup of English

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a race of

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