染色体分度

Scientists at the Whitehead Institute in Cambridge, Massachusetts say it's fortunate for humans that the Y chromosome is not on the verge of extinction. That's because the Y is the chromosome that makes males males. The outlook is less favorable for

发表于:2019-01-08 / 阅读(135) / 评论(0) 分类 2005年NPR美国国家公共电台

This is the VOA Special English Health Report. A miscarriage is the natural loss of a pregnancy before the twentieth week. This happens to as many as twenty percent of known pregnancies. Experts say many pregnancies end before a woman even knows she

发表于:2019-01-11 / 阅读(49) / 评论(0) 分类 2010年VOA慢速英语(八)月

Second-division soccer in the United States is set to make a return. The on-again, off-again Division 2 North American Soccer League (NASL) has been provisionally sanctioned by the U.S. Soccer Federation (USSF) for the 2011 season. The league will be

发表于:2019-02-03 / 阅读(52) / 评论(0) 分类 英语新闻

BERLIN, April 25 (Xinhua) -- Hertha Berlin climb into German Bundesliga, the first division, three days before the end of season 2010/2011 thanks to the winner from striker Adrian Ramos over Duisburg on Monday. Berlin staged a faultless but unspectac

发表于:2019-02-07 / 阅读(72) / 评论(0) 分类 英语新闻

BUENOS AIRES, Dec. 7 (Xinhua) -- Former Manchester United and Argentina midfielder Juan Sebastian Veron has confirmed he will play in Argentina's fifth division next year. The 37-year-old ended his career with top-flight side Estudiantes in June but

发表于:2019-02-13 / 阅读(164) / 评论(0) 分类 英语新闻

SHENZHEN, South China, March 24 (Xinhua) -- Phillipe Troussier's Shenzhen Ruby suffered a bitter 1-0 defeat against Shanghai East Asia at their first home match in the Chinese second division league here on Saturday, overshadowing their ambition to r

发表于:2019-02-17 / 阅读(74) / 评论(0) 分类 英语新闻