Alessandra Marchioro (R) of Fluminense club reacts with Tatiana Lemos de Lima of Pinheiros club after their women's 50m freestyle finals at the Brazilian Olympic Swimming Trials in Rio de Janeiro May 10, 2012. This competition is the last chance for Brazilian swimmers to qualify for the 2012 London. REUTERS/Sergio Moraes (BRAZIL - Tags: SPORT SWIMMING OLYMPICS)