save-the-sharks!拯救鲨鱼-(导入).ppt

panda.golden monkey.dolphin.shark.“海中狼”。还有鲸鲨，大白鲨。目前因为有大多数人认为鲨鱼的软骨（即鱼翅）中蛋白质很高，但这是错误的。鸡蛋的蛋白质远远超过鱼翅。因为人类错误的观念，鲨鱼几十年来被大量猎杀，专家分析再这样下去，鲨鱼将绝种，请保护好鲨鱼。吃鱼翅是可以的，但也对人体有害，因为鲨鱼翅中含有一定量的神经毒素。鲨鱼，生活在海洋中，是海洋中最凶猛的鱼类。鲨鱼早在恐龙出现前三亿年前就已经存在地球上，至今已超过五亿年，它们在近一亿年来几乎没有改变。鲨鱼，在古代叫作鲛、鲛鲨、沙鱼，是海洋中的庞然大物，所以号称.the food chain in oceans ecosystem.Sharks are at the top of the food chain.hear ofcut offhear fromno longerbe harmful tobring danger to the number ofso far不再割掉；砍掉收到来信的数量对有害听说给带来危险目前.Some people like to eat sharks fin soup,especially in_ China.But getting the sharks fin is very _.When people catch sharks,they_ _ their fins and throw the sharks back into the ocean.The shark slowly dies because it cant _without a fin.And it is also_ to the environment.Sharks are at the_ of the food _.If the number of sharks drops too slow,it will break the balance of the nature.Please say no to eating shark fin soup,and take action to save the sharks！.