LONDON (Reuters) - China set a women's team sprint world record twice in two races on Thursday, minutes after hosts Britain had done the same and were then disqualified as the Olympic track cycling got off to a thrilling start. Guo Shuang and Gong Jinjie clocked 32.422 seconds in the first round to go into the gold medal match with Germany having earlier managed 32.447 in qualifying. British pair Victoria Pendleton and Jessica Varnish had been roared on by a passionate home crowd to set 32. ... More...