如图是�吸和血液循环的示意图.请据图回答1ab表示人体的气体交换过程a称为 �吸b称为 �吸.2c表示由胃肠流入肝脏的血管.在 Template




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tomski如图是�吸和血液循环的示意图.请据图回答1ab表示人体的气体交换过程a称为 �吸b称为 �吸.2c表示由胃肠流入肝脏的血管.在 coloring