题目

阅读理解 A handsome middle-aged man walked quietly into the café and sat down. Before he ordered, he couldn't help but noticed a group of younger men at the table next to him. It was obvious they were making fun of something about him and it wasn't until he remembered he was wearing a small pink ribbon(丝带) on the lapel of his suit that he became aware of what the joke was all about.The man pretended not to notice it, but the whisper and laughter began to get to him. He looked one of the rude young men straight into the eye, placed his hand beneath the ribbon and asked, “This?” Wit人工肾是根据肾脏的工作原理制成的一套血液透析装置,它可以模拟肾的工作,析出肾功能严重丧失的病人血液中的代谢废物和有毒物质,维持病人细胞的正常代谢活动。图甲为尿液形成示意图,图乙为人工肾工作的基本原理示意图,请回答下列问题。(1)图乙中容纳血液的膜管相当于图甲中的__,起滤过作用。与肾形成尿液的过程比较,人工肾的工作过程中没有__过程。(2)肝细胞产生的尿素分子排出体外的路径如下(请补充结构名称):肝细胞产生的尿素→肝部毛细血管→……→下腔静脉→右心房→__→肺动脉→肺部毛细血管→__ →左心房→左心室→主动脉→肾动脉→入球小动脉→……→体外。