问题 单项选择题 A1/A2型题

食管裂孔疝指()。

A.LES功能减弱

B.胃酸分泌功能增加

C.食管蠕动功能障碍

D.膈食管韧带解剖缺陷

E.支配食管的交感神经兴奋占优势

答案

参考答案:D

解析:食管裂孔疝(hiatushernia)是指腹腔内脏器(主要是胃)通过膈食管裂孔进入胸腔所致的疾病。食管裂孔疝是膈疝中最常见者,达90%以上。疾病病因:①食管发育不全的先天因素。②食管裂孔部位结构如肌肉有萎缩或肌肉张力减弱。③长期腹腔压力增高的后天因素,如妊娠、腹腔积液、慢性咳嗽、习惯性便秘等可使胃体疝人膈肌之上而形成食管裂孔疝。④手术后裂孔疝,如胃上部或贲门部手术,破坏了正常的结构亦可引起疝。⑤创伤性裂孔疝。

材料分析题

材料:2009年是建国60周年。60年前,毛 * * * * 向全世界宣布:中华人民共和国成立了!从此,中国人民站了起来,当家做了主人,坚持走自己的路,取得了累累硕果,树立了和平、合作、负责任的国际形象。

(1)新中国成立后,我国的国家性质是什么?我国实行什么政治制度确保人民当家作主?

                                                                                                                                                                

                                                                                                                                                               

(2)在我国,一切权力属于人民。我国人民是通过什么方式行使权力的?

                                                                                                                                                               

                                                                                                                                                              

                                                                                                                                                               

                                                                                                                                                               

(3)请你举出实例,说明我国在国际社会中是和平、合作、负责任的国家。

                                                                                                                                                               

                                                                                                                                                               

单项选择题