第12题: [单项选择]Those regions inhabited mostly by national minorities in the Northwest of the country are retarded in terms of social progress and economic development ______ the coastal provinces. A. in relevance to B. in conformity with C. in relation to D. in accordance with 参考答案:C 答案解析:in relation to关于。in conformity with依照,遵从,一致。in accordance with依照,按照,与…一致。
第19题: [单项选择]错颌畸形主动治疗结束以后,为防止复发,保持已经取得的矫治效果,需要用保持器。保持器就是防止复发的机械性保持装置。 标准的Hawley保持器的基本结构是 A. 位于侧切牙和尖牙之间的双曲唇弓、焊接在唇弓远中的尖牙卡环和基托 B. 一对磨牙卡环、双曲唇弓及基托 C. 一对磨牙箭头卡环、焊接在卡环桥部的双曲唇弓及塑胶基托 D. 基托以及包埋在牙弓两侧最后磨牙远中面基托内的长唇弓 E. 邻间钩、包埋于牙列两侧最后磨牙远中面基托内的长唇弓 参考答案:B