如图是人体消化�吸循环及排泄等生理活动示意图其中的abcd表示人体的几大系统.� �表示人体的某些生理过程.请据图回答下列问题 Template




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tomski如图是人体消化�吸循环及排泄等生理活动示意图其中的abcd表示人体的几大系统.� �表示人体的某些生理过程.请据图回答下列问题 coloring