第3题: [单项选择]No sooner had Mrs. Tyler entered the kitchen ______ a knock at the gate door. A. did she hear B. then she heard C. when she heard D. than she heard 参考答案:D 答案解析:no sooner...than与hardly...when一样是固定搭配,表示“还没……就……”,因此选项D正确。
第29题: [单项选择]下列描述中,哪项是错误的 A. 所有骨折线上的牙,易引起骨折感染,均应拔除 B. 成人牙列中不松动的乳牙,下方无恒牙或恒牙阻生,不必拔除 C. 妨碍义齿修复的移位牙或错位牙,应拔除 D. 疑为某些疾病的病灶牙,应拔除 E. 放射治疗范围内的牙齿,放射治疗前7~10天可予拔除 参考答案:A