第30题: [单项选择]不出现颈静脉怒张的病变是() A. 心包积液 B. 纵隔肿瘤 C. 门静脉高压 D. 右心衰竭 E. 上腔静脉综合征 参考答案:C
第31题: [单项选择]I should not have laughed if I ________ you were serious. A. thought B. would think C. had thought D. have thought 参考答案:C 答案解析:【解析】句意:如果我那时想到你是认真的,我就不会笑了。 此题考查与过去事实相反的虚拟语气。If从句使用过去完成式,主句使用would/should have done. 故正确答案:C