[单项选择]男孩6岁,因发热,咳嗽1周,近3天头痛,呕吐3次来院。体检:体温39.2℃,神志清,精神萎靡,颈稍抵抗,右侧巴氏征阳性,克氏征、布氏征均阳性,经脑脊液检查为病毒性脑炎病毒性脑炎最主要的病变是()。 A. 脑膜水肿、充血、炎性细胞浸润 B. 脑实质水肿、软化和坏死 C. 神经细胞脱髓鞘病变 D. 脊髓神经根部炎症 E. 脊髓前角灰质炎症
第12题: [单项选择]In this experiment, they are wakened several times during the night, and asked to report what they______. A. had just been dreaming B. have just been dreaming C. are just dreaming D. had just dreamt 参考答案:B 答案解析:时间副词 just 作“刚才,刚刚”讲时,谓语动词一般只能使用完成时或完成进行时(这要根据动词是短暂性还是延续性的来定)。由于动词 dream 是延续性动词,故这里要使用完成进行时。
第15题: [单项选择](On the whole), ambitious students (are much likely) to succeed in their studies than (those) (with) little ambition. A. On the whole B. are much likely C. those D. with 参考答案:B 答案解析:此句是一个包含了比较级的句子,所以应改为are more likely.
第16题: [单项选择]心脏结构中传导速度最慢的是() A. 房间束 B. 普肯耶纤维 C. 左束支 D. 右束支 E. 房室结 参考答案:E