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This section mainly introduces the splitting strategy.-Side lights, 2 nautical miles;亦或者有心人从蛛丝马迹之中推断出什么，继而起了疑心。The five-finger design enables the double-layer fabric at the toe seam and the integrated forming technology to reduce the harm to the human body at the seam and seam.Liz Bonnin presents a controversial and provocative episode of Horizon, investigating how new scientific research is raising hard questions about zoos - the film explores how and why zoos keep animals, and whether they need to change to keep up with modern science or ultimately be consigned to history.Should zoos cull their animals to manage populations? Liz travels to Copenhagen Zoo, who killed a giraffe and fed it to the lions, to witness their culling process first hand. They think it is a natural part of zoo keeping that is often swept under the carpet. Should some animals never be kept in captivity? In a world exclusive, Liz visits SeaWorld in Florida and asks if captivity drove one of their orcas to kill his trainer.But could zoos be the answer to conserving endangered species? Liz examines their record, from helping breed pandas for the wild to efforts to save the rhinos. She meets one of the last surviving northern white rhinos and discovers the future of this species now lies in a multimillion-dollar programme to engineer them from stem cells. Veteran conservation scientist Dr Sarah Bexell tells Liz the science of captive breeding is giving humanity false hope.生命终将逝去，称为历史，留下的历史，将成就更多生命的时代。　　为了使中国彻底屈服，日本发动了惨绝人寰的南京大屠杀，刘长岭用自己的生命捍卫国土，同时用自己的生命来向马昕蓝表白。马昕蓝被感动了，然而她拒绝了刘长岭。在一次协同八路军作战中，刘长岭的飞机被击落，马昕蓝以为刘长岭牺牲了，十分难过。当她看到被八路军成功营救的刘长岭再次出现在她面前，她不禁失声痛哭。然而，在各自的立场上，面对共同的敌人他们是同壕的战友，却不可能成为爱人。