生物体的结构和功能相适应的实例很多.下列说法错误的是 A.肺泡表面布满毛细血管有利于气体交换b.乌龟背部有甲适于水中生活c.小肠壁上有 Template




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tomski生物体的结构和功能相适应的实例很多.下列说法错误的是 a.肺泡表面布满毛细血管有利于气体交换b.乌龟背部有甲适于水中生活c.小肠壁上有 coloring