What bird is essential to eating? 答案：swallow 燕子

体坛英语资讯：Spain, Russia kick off Euro Futsal campaigns with easy wins

体坛英语资讯：Atletico complicates cup progress as Racing takes narrow lead to Pamplona

体坛英语资讯：Egypt enters top ten of FIFA world ranking

体坛英语资讯：Federer, Serena get royal treatment

体坛英语资讯：Grand Slam champions leading lights on Day Four at Australian Open

体坛英语资讯：Greipel outpaces rivals for 2nd straight victory

体坛英语资讯：Olympic Preview: U.S. sets to be biggest winner in snowboard at Vancouver

体坛英语资讯：Olympic Preview: Chinese aerials skiers to fly high in Vancouver

体坛英语资讯：Arsenals Eduardo ruled out of Chelsea match

体坛英语资讯：Russia aims for 40 medals at Vancouver Olympics

体坛英语资讯：Chinese soccer needs overhaul

体坛英语资讯：Blatter, Medvedev meet in Moscow over WC bid

体坛英语资讯：Hamburg obtain Reals striker Van Nistelrooy

体坛英语资讯：Sharapova knocked out, Safina struggles to win at Australian Open

体坛英语资讯：Vancouver 2010 Winter Olympics ceremony podium unveiled

体坛英语资讯：New boss pledges to revive Chinese football in five years

体坛英语资讯：Jazz sign rookie guard Gaines for the season

体坛英语资讯：Li Na sets sights on WTA finals

体坛英语资讯：Yao Ming enjoying his role as team owner

体坛英语资讯：Hu Yadan crowned at 2010 All-Star Diving Series

体坛英语资讯：China, Australia win two golds each at UCI track cycling World Cup

体坛英语资讯：Atletico Madrid confirms Salvio signing

体坛英语资讯：Adriano to start for Flamengo against Bangu

体坛英语资讯：Botafogo remains undefeated in state championship

体坛英语资讯：Soccer stars play match for Haiti earthquake relief

体坛英语资讯：Argentine driver Lopez to join F1 new member USF1

体坛英语资讯：Costa Rican player Lopez travels to China to find club

体坛英语资讯：Federer survives scare to reach Australian Open second round

体坛英语资讯：Olympic Preview: Bjorndalen continues to make biathlon history

体坛英语资讯：Cristiano Ronaldo hero and villain as Real Madrid beats Malaga