发表于:2018-12-11 / 阅读(73) / 评论(0) 分类 VOA标准英语2014年(三月)

This is Scientific America's Sixty-Second-Science. I am Steve Mirsky. Got a minute? Some interesting electrical activity in the clouds of ash drifting around Europe as a result of that Icelandic volcano. Models predicted that electrical charge should

发表于:2018-12-24 / 阅读(38) / 评论(0) 分类 Scientific American(五)月

Have you ever bought a new electronic device, or tried a new activity, and then dropped it because you were sure you couldnt possibly master it? Well, dont give up so quickly. Researchers performed six experiments that involved subjects trying out ne

发表于:2018-12-24 / 阅读(31) / 评论(0) 分类 Scientific American(七)月

This is the VOA Special English Health Report. How active you are early in life may affect how able-minded you are late in life. That was the finding of a new study of cognitive impairment, or a loss in mental abilities. The study involved more than

发表于:2019-01-11 / 阅读(52) / 评论(0) 分类 2010年VOA慢速英语(七)月

BEIJING, March 29 (Xinhua) -- Chinese President Xi Jinping on Wednesday stressed the importance of afforestation and urged people, especially the young, to understand and protect nature via tree planting activities. Chinese PresidentXi Jinpingtalks w

发表于:2019-02-05 / 阅读(69) / 评论(0) 分类 cctv9英语新闻2017年

A new study finds regular physical activity as a teenager may prevent cognitive impairment - a decline in mental abilities - decades later. Previous studies found that people who were physically active in later life were more likely to avoid mental d

发表于:2019-02-07 / 阅读(68) / 评论(0) 分类 VOA标准英语2010年(七)月