美国与欧盟领导人于去年4月在华盛顿签署的EU-US Open Skies Agreement Open Skies Agreement）正式生效，双方将进一步向对方开放航空市场。[http:--news.xinhuanet.com-newscenter-2008-03-30-content_7884679.htm 新华网]url=http:--news.xinhuanet.com-newscenter-2008-03-30-content_7884679.htm [http:--news.bbc.co.uk-chinese-simp-hi-newsid_7320000-newsid_7321200-7321242.stm BBC中文网]url=http:--news.bbc.co.uk-chinese-simp-hi-newsid_7320000-newsid_7321200-7321242.stm