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下列说法中不能够体现出生物体的结构与功能相适应的是 A．鱼鳔调节身体比重b．鱼体表粘�以减�阻力c．鸟类的骨骼中空以减轻体重d．鱼鳍能 Template




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tomski下列说法中不能够体现出生物体的结构与功能相适应的是 a．鱼鳔调节身体比重b．鱼体表粘�以减�阻力c．鸟类的骨骼中空以减轻体重d．鱼鳍能 coloring
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