第5题: [单项选择]Questions 23 to 25 are based on the conversation you have just heard.[A] She preferred homestay families. [C] She didn’t like her cousin. [B] Her aunt needed the room for her cousin. [D] Her aunt didn’t like her. 参考答案:B 答案解析:[听力原文]23-25 M: Sara, I’ve heard that you want to move into a homestay family. Is that correct
第19题: [单项选择]患者,女性,24岁,左上颌侧切牙折断,X片显示已做完善根管治疗,叩 (-),松(-),断面在龈缘上约 2mm,此时应作哪种修复 A. 金属全冠 B. 暂时冠 C. 烤瓷桩核冠 D. 瓷全冠 E. 3/4冠 参考答案:C 答案解析:[解析] 由于患牙牙体大部缺失,剩余牙体不足以支持固位,因此无法直接行冠修复。患者已经过完善的根管治疗,无临床症状,为满足固位与美观的要求,采用烤瓷桩核冠修复。
第20题: [单项选择]下列有关超声检查特点的叙述,正确的是() A. 无创伤,无痛苦,但有电离辐射 B. 需对比剂才能获得管腔结构的高清晰图像 C. 可检测有无血流动力学参数及观察器官血流灌注 D. 对骨骼、肠管的检查较佳 E. 超声成像中伪影较少,易观察器官及结构的整体关系 参考答案:C