Doctors use X-rays to view internal organs, obtain clear images of possible disease and to treat cancer. For years radiation has been used to save lives, but there is growing concern that some patients are getting more than they ask for when they und

发表于:2018-12-08 / 阅读(48) / 评论(0) 分类 VOA标准英语2010年(一月)

British authorities say they are close to identifying the man who murdered American Journalist James Foley. British newspapers have named several suspects including a former rapper who left London last year to fight in Syria. Britains ambassador to t

发表于:2019-01-19 / 阅读(26) / 评论(0) 分类 澳洲ABC新闻快递2014年

Friday morning's underground nuclear test in North Korea was not a complete surprise, as activities associated with nuclear weapons testing have been noted around the test facility for the past few months. However, Su Xiaohui, deputy director of Inte

发表于:2019-01-19 / 阅读(64) / 评论(0) 分类 2016CRI中国国际广播电台

China's first permanent magnetic monorail train has successfully completed a test run in the city of Qingdao, in Shandong Province. The high-tech urban transportation system features strong climbing capacity, a small turning radius, energy efficiency

发表于:2019-02-05 / 阅读(69) / 评论(0) 分类 cctv9英语新闻2016年

YICHANG, Oct. 30 (Xinhua) -- China's Three Gorges Dam on Sunday reached its designed highest mark, the second time for the world's largest water control and hydropower project to run at full capacity. The water level hit 175 meters at 5 p.m. after st

发表于:2019-02-07 / 阅读(92) / 评论(0) 分类 英语新闻

The most notorious such quakes ever to hit the United States were a series of three in New Madrid, Missouri, in the winter of 1811-12. 在美国经历过的这类地震当中,最著名的要算是1811-1812年冬发生在密苏里州新马德里的一

发表于:2019-02-25 / 阅读(42) / 评论(0) 分类 万物简史