全冠口内试戴时应检查的问题是()
A.咬合、就位
B.就位、龈边缘
C.龈边缘、咬合、就位
D.接触点、咬合、就位
E.接触点、咬合、就位、龈边缘
参考答案:E
消防员呼救器保持静止状态30秒开始预报警。
My niece has three brothers, all ( ) than she. ( ), John, is an oil worker.
A.older; The oldest
B.older; The eldest
C.elder; The oldest
D.elder; The old one