下列不是放射治疗机的是()
A、模拟定位机A
暂无解析
Such person _______ you describe is rare nowadays.
If an earthquake occurred，some of the one-storey houses ________.
影响悲哀反应的因素有（）
There is the appreciation of the salient historical truth ________ the aging of advanced societies has been a sudden change
_______ that the scientist will give us a talk next month?
