润涛阎 was wrong: 刘翔遭到人家的质疑, but 刘翔 was proved 没有服用兴奋剂 finally.
google it firstly....for example .....
1)“连马都服用兴奋剂的国家”为何不断造谣抹黑中国 (
http://news.xinhuanet.com/comments/2008-08/04/content_8938407.htm )
2) 日本媒体:刘翔是否服用了无法检查出来的兴奋剂?( http://tieba.baidu.com/p/227699044 )
( http://focus.titan24.com/guniupi/ )