第9题: [单项选择]关于脐疝的描述,不正确的是()。 A. 是先天性前腹壁发育不全所致 B. 前腹壁可见一向外膨出的包块 C. 疝出的内容物依缺损的大小而不同 D. 膨出的包块内可含有肠管、肝脏、脾脏等腹腔内器官 E. 疝出的内容物可与羊水相通 参考答案:E 答案解析:脐疝(脐膨出)的包块表面有一层线状强回声膜覆盖,即腹膜或羊膜和腹膜,且在两层膜之间为脐带胶质形成的网条状无回声,因此疝出的内容物不与羊水相通,这是与腹裂畸形的主要鉴别点。
第20题: [单项选择]In the last paragraph, the word "designated" is closest in meaning to ______. A. abstract B. planned C. evil D. chosen 参考答案:D 答案解析:词汇题。designated意为“指定的”,与选项中的chosen意思最为接近。abstract抽象的;planned计划的;evil邪恶的,有害的。
第36题: [单项选择]Luis Posada Carriles was detained________. A. because he had killed 73 Cuban civilians in 1976 B. because he had planned an airliner bombing in 1976 C. because he had worked as a spy on Cuba’’s behalf D. because of his illegal immigration status 参考答案:B