第3题: [多项选择]室间隔缺损的患儿临床上出现紫绀,且逐渐加重,应考虑( ) A. 室间隔缺损面积达1cm2 B. 明显的肺动脉高压 C. 伴有充血性心力衰竭 D. 伴有感染性心内膜炎 E. 艾森曼格综合征 参考答案:B, E
第4题: [单项选择]We watched carefully______the house. A. during she walked against B. during she walked towards C. while she walked against D. while she walked towards 参考答案:D 答案解析:解析:during表示在一段时间内,while表示当……时,某一个瞬间。walk towards朝……走来,walk against背对着……走。这句话意思是:当她走向房子的时候我们在仔细地观察她。故
第5题: [单项选择]布鲁菌的抗原主要有( ) A. 牛种菌抗原A B. 羊种菌抗原M C. 牛种菌抗原和羊种菌抗原M D. Z抗原 E. Y抗原 参考答案:C