说明文。课文围绕“鲨鱼是危险的动物还是濒危动Para. 1-2 People thoughtPeople have always been 1.of sharks.they were dangerous.The film Jaws made them believe sharks were 2.The number of large sharks fell due to 4.and finning.Sharks:danger'OLIS Para. 3-4 People realizedExperts prove sharks do...