[医] 生命自生(生物由无机物产生)

Biosolids

By Mario Ritter Broadcast: October 28, 2003 This is Steve Ember with the VOA Special English Agriculture Report. Farmers have long put animal waste on their fields. They may also use human waste. Mode

发表于:2019-01-02 / 阅读(73) / 评论(0)

VOA2003（下）-农业与经济

2006年VOA标准英语-Melting of Earth’s Poles Confirmed

By Paul Sisco Washington, D.C. 24 November 2006 watch Polar Melting report 2007 is International Polar Year. It's an international effort to spur scientific research at the most forbidding places on Earth, primarily because many in science consider

发表于:2019-01-12 / 阅读(112) / 评论(0)

2006年VOA标准英语（十一月)

Poles in the media

BBC Learning English Weekender Poles in the media Callum:Hello, I'm Callum Robertson and this is Weekender. One of the largest groups of new migrants to Britain are Poles. In 2004 Poland entered the European Union which gave Polish people much great

发表于:2019-01-16 / 阅读(129) / 评论(0)

Weekender

美国国家公共电台 NPR Juno Spacecraft Reveals Spectacular Cyclones At Jupiter's Poles

ARI SHAPIRO, HOST: There are cyclones at the poles of Jupiter. That's one of the surprises that NASA is reporting today. The space agency's Juno probe has been orbiting the gas giant since last summer. It's completed six revolutions of the planet so

发表于:2019-01-17 / 阅读(41) / 评论(0)

2017年NPR美国国家公共电台5月

加州英语分级G5 Science at the North and South Poles 12

图片1 图片2 图片3 图片4 图片5

发表于:2019-02-09 / 阅读(86) / 评论(0)

加州英语分级G5

加州英语分级G5 Science at the North and South Poles 11

图片1 图片2

发表于:2019-02-09 / 阅读(114) / 评论(0)

加州英语分级G5

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