可以免费看的三级视频

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.机灵鬼瞪大眼睛，结巴道：少爷不是说……说咱们是……是正人君子吗……大苞谷坚决道：咱们当然是正人君子。　　「情人节篇」：黑泽&安达将共度第一个情人节，安达收到本命巧克力，大醋王黑泽有情敌！ ？我绍兴不是吝啬的地方。5. Anti CSRF Token腾讯视频大型自制纪录片《风味人间》将讲述全球范围内以美食为线索的人文故事。在全球视野里审视中国美食的独特性，在历史演化过程中探究中国美食的流变，深度讨论中国人与食物的关系，并勾勒出恢弘的中华美食地图，从美食中折射出中国人民族个性的侧面。《风味人间》历时四年精心准备，全片共8集，将于2018年在腾讯视频平台独家播出。《风味人间》将关注更加宏大的美食世界，触及更广泛人群的美食情结，在美食纪录片领域树立全新的标杆。总导演陈晓卿全心投入，带领中国最优秀的纪录片制作团队，历时四年，挖掘深度与广度兼具的创作题材，将为观众呈现全新的视听盛宴。Alibi和PBSMasterpiece联合制作6集罪案剧《安妮卡Annika》,改编自BBCRadio4非常成功的广播剧《AnnikaStranded》,由NickWalker创作。NicolaWalker饰演主角AnnikaStrandhed,一名敏锐,机智又神秘的督察。剧集讲述Annika领导一支新组建的海上凶案专家组,负责调查发生在苏格兰航道上原因不明,残忍恶劣,看上去难以解释的谋杀案。Annika管理着自己才华横溢但不走寻常路的团队,面对着同样聪慧但心思复杂的青少年女儿,在此过程中,她通过打破第四面墙的形式,让观众成为她的密友,分享她对案件和生活的带着讽刺意味的观察。