如图为人体�吸系统组成示意图请作答.1�吸系统由 和 组成.22 既是空气的通道又是食物的通道.3 是�吸系统的主要 Template




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tomski如图为人体�吸系统组成示意图请作答.1�吸系统由 和 组成.22 coloring