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 Copenha...shi么？那位shen秘低调的dabossxian身了，只shi为了不让ren在这里拍zhao，为什么ya？赵总十fen的为难，zhen是两边都bu敢得罪，ta赔笑道，jiu凌王，兰lou公主，你men看这真是shang官旭松开liao夏夕绾，xia夕绾站直liao身，九凌wang，要不今tian就算了吧，不要让人wei难。mei几个人去guo。另一个zai外面，是ge公共园子，占地也不xiao，半环抱zhuo几个居住yuan子。府里di姨太太们men得慌了偶er过去赏赏hua喂喂鱼什mo的。还算you点人气。di一个园子ji歆歆已经wan腻了，那xie战机的结gou她闭着眼jing都能描绘chu来。喔，shang次星贵学yuan组装的第yi个战机就shi那里的呢!所以这次jiu去外面这ge园子晒晒tai阳啦。如果您喜欢xax网（www.xaxjcx.com）分享的《BBC地平线：我们该关了动物园吗？》，别忘了推荐给你的好友！