第14题: [单项选择]If you had made good preparations before, you ( ) about the coming examination now. A. would not be worried B. would not have worried C. could not be worried D. could not have been worried 参考答案:A 答案解析:
第23题: [单项选择]可摘局部义齿修复时,对近中、颊(舌)向倾斜的末端孤立基牙(磨牙),宜选择下列哪类卡环 A. 环形卡环 B. 单臂卡环 C. 正型卡环 D. 双臂卡环 E. 下返卡环 参考答案:A 答案解析:圈形卡环:多用于远中孤立的磨牙上,上颌磨牙向近中颊侧倾斜、下颌磨牙向近中舌侧倾斜者。卡环臂的尖端在上颌磨牙的颊侧和下颌磨牙的舌侧。铸造的圈形卡有近、远中两个支托。锻造圈形卡只放近中支托,非倒凹区卡环臂