问题 单项选择题

一胎龄33周早产儿,顺产,生后2小时出现呼吸困难、发绀,呈进行性加重,伴呻吟,经头罩吸氧无效,于生后10小时急诊送入NICU,血气分析示:严重低氧血症及高碳酸血症。关于该患儿疾病的发病机制,以下哪项不正确

A.肺表面活性物质缺乏,肺泡萎缩

B.肺组织缺氧缺血情况下,毛细血管和肺泡壁渗透性增加,纤维蛋白沉着

C.肺泡和细支气管壁上附有透明膜

D.肺内液体吸收转运障碍,肺组织水肿,使小气道狭窄

E.肺血管痉挛,引起动脉导管和卵圆孔的右向左分流,造成青紫

答案

参考答案:D

材料分析题

    通常人们把生产的各部门划分为三类产业。农业(包括林业、牧业、渔业等)是第一产业,工业和建筑业是第二产业,流通部门和服务部门是第三产业,一般而言,随着经济的不断发展,第二产业和第三产业的比重逐渐增大,而第一产业的比重逐渐减小。长沙、株洲、湘潭这三个地域联系紧密的城市正在向经济一体化迈进。

请根据下表中的数据思考并回答下列问题:

                                                                                                               数据来源:2006年《湖南年鉴》

(1)请对三个城市的经济状况进行简要的对比分析。

                                                                                                                                                               

                                                                                                                                                               

                                                                                                                                                               

                                                                                                                                                               

                                                                                                                                                                

(2)如果要对三地经济作进一步了解,你认为还要搜集哪些资料? 

                                                                                                                                                                

                                                                                                                                                                

                                                                                                                                                                

                                                                                                                                                                

单项选择题