[化] 二氧化硒
[医] 二氧化硒

吸收金属原料的植物有助于抗癌药品的研制

99 吸收金属原料的植物有助于抗癌药品的研制 AGRICULTURE REPORT September 25, 2001: Plants that Absorb MetalsBy George Grow （Start at 1'00

发表于:2019-01-02 / 阅读(45) / 评论(0)

科技之光

Texas Scientists Work to Reduce Carbon Dioxide Air Pollution

By Greg Flakus Scientists in Texas are trying to find a way of reducing carbon dioxide air pollution by capturing the gas, compressing it and then putting it underground. This technique could also yie

发表于:2019-01-03 / 阅读(49) / 评论(0)

VOA2004（下）--健康科技

VOA标准英语2011-Study Shows Vitamin E Increases Prostate

Study Shows Vitamin E Increases Prostate Cancer Risk A number of medical studies over the years suggested that vitamin E, taken as a dietary supplement, might help prevent prostate cancer. But new research finds not only that the earlier studies were

发表于:2019-01-14 / 阅读(40) / 评论(0)

VOA标准英语2011年(十月)

VOA标准英语2013--Scientists Suggest Adding Selenium to Diets in Malawi

Scientists Suggest Adding Selenium to Diets in Malawi The study, which was published in the journal Scientific Reports, found that most Malawi soils do not have an adequate amount of selenium required for human nutrition. In the report, researchers a

发表于:2019-01-14 / 阅读(40) / 评论(0)

VOA标准英语2013年(三月)

AGRICULTURE REPORT - Carbon Dioxide and Crops

AGRICULTURE REPORT – March 12, 2002: Carbon Dioxide and Crops By George Grow This is the VOA Special English AGRICULTURE REPORT. Increasing levels of carbon dioxide gas in Earth’s atmosphere have

发表于:2019-01-30 / 阅读(72) / 评论(0)

农业与发展

Prices Proposed for Carbon Dioxide from Cars

Drivers in the eastern United States may soon start paying for the pollution made by their motor vehicles. Nine eastern states and Washington, D.C. are launching a system of pricing the carbon dioxide produced from burning gasoline and diesel fuel. M

发表于:2019-02-14 / 阅读(55) / 评论(0)

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