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跟希哥学英语
World Down Syndrome Day is on March the 21st every year. It is on this day because the number 21 is important in the identification of Down Syndrome. The condition is created by a 21st, extra chromosome being replicated three times, thus causing the
英语课程学习计划和讲义
By Melinda Smith Washington 23 July 2007 It has been estimated that ten percent of people worldwide suffer from Restless Leg Syndrome . RLS is a neurological disorder that makes it difficult to sit or lie still for long periods of time. The disorder
2007年VOA标准英语（七月）
HEALTH REPORT - Post Polio Syndrome By Karen Leggett Broadcast: Wednesday, April 14, 2004 This is the VOA Special English Health Report. Polio is a disease of the muscles and the nervous system. It is
健康与经济
SARAH MCCAMMON, BYLINE: Ohio might soon become the latest state to restrict abortions. A bill to ban doctors from performing abortions after a Down syndrome diagnosis has passed both chambers of the state legislature and could be on its way to the go
2017年NPR美国国家公共电台12月
55 肯塔基州的母马不育症 DATE=6-7-01 TITLE=SCIENCE REPORT - Mare Reproductive Loss Syndrome BYLINE=George Grow (Start at 59
科技之光