第20题: [单项选择]How long is Carol’s vacation every summer [A] Two months. [B] Two weeks. [C] Three weeks. 参考答案:B 答案解析:[听力原文] 17-20 Every summer, Carol has a two-week vacation. She usually travels a lot during he
第34题:[单选题](10分)单选题 10 关于术中打结步骤,哪种说法是错误的 A. 主要用于结扎血管和缝合时 B. 口腔颌面外科以单手打结和针持打结最常用 C. 口腔内缝合不必打三重结,少见结的滑脱 D. 打结要求方结和外科结,防止打滑结 E. 打结的速度和质量决定手术时间的长短和效果的的好坏 参考答案:C