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企 鹅

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今儿天气不错,气温至少零下 30 摄氏度 !. 企 鹅. 你也来冰上躺躺?. 海 豹. 下水游一圈怎么样?. 比比我们谁 胖 ?. 它们的共同特征?. 它们都生活在水中. 它们的共同特征?. 这些鸟生活在水边或湿地,以鱼类等为食. 它们的共同特征?. 不同环境中的生物都具有与其生活环境相适应的特征。适应普遍存在。. 测测没有植物的操场上的空气湿度怎样. 测测植物相对较少的草地上的空气湿度. 这里的植物好茂盛,测测这里边的空气湿度. 裸地. 平均值. 72.4%. 79.5%. 82.8%. 草地. 灌丛. 裸地与草地相比说明:

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