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听出她话中的意思，秦枫一颗心重重落下，且是意外之喜，当即肃然道：救死扶伤，乃是我等医者本分。就去了隔壁屋子玩闹，红椒也带着妹妹表妹们和赵家姐妹进去里间直忙到正午时分，才将新军规整完毕。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.尹旭达的时候，韩信也恰好赶过来，时隔多年，两人再次见面。A variety of schemes, the specific implementation can refer to the above introduction.