据下面提供的图片资料,归纳鸟类动物适于飞翔的特点。 |
(1)体型及体表覆盖物_____________________________________________; (2)前肢及肌肉____________________________________________________; (3)呼吸方面______________________________________________________; (4)骨骼___________________________________________________________; (5)消化及其他方面_________________________________________________; |