第1题: [单项选择]慢性胆囊炎的CT特征表现是() A. 胆囊大,囊壁水肿,密度低 B. 胆囊正常大小,肝内胆管扩张 C. 胆囊小,囊壁增厚 D. 胆囊大,胆总管扩张 E. 胆囊大,肝内胆管扩张 参考答案:C 答案解析:慢性胆囊炎CT主要表现为:胆囊缩小,为胆囊萎缩所致;也可增大,由胆囊积水引起。胆囊壁均匀或不均匀性增厚,可有钙化。增强扫描增厚的胆囊壁出现均匀增强。
第31题: [单项选择]Passage One Questions 26 to 28 are based on the passage you have just heard. A. They had some problem with their hearts. B. One of them had some problem with her heart. C. They had some problem breathing. D. One of them had some problem breathing. 参考答案:C 答案解析:[听力原文] What was wrong with the newly-born babies