题目: —Mike doesn't look happy. What's wrong with him?—It seems that he has some trouble ______ that problem. [ ]A. solve B. solves C. solving D. to solve 答案: 答案:C
题型:单项选择题 A2型题 男孩,3岁,因阵发性腹痛、呕吐半天,曾伴果酱样大便1次。查体:脐旁右侧可触及腊肠样肿块,有压痛。此病儿最可能的诊断是()A.急性阑尾炎B.急行肠系膜淋巴腺炎C.肠蛔虫症D.肠套叠E.肠扭转 查看答案