医疗机构发现甲类传染病时，对疑似病人在明确诊断前，应在指定场所进行
A．访视
B．留验
C．医学观察
D．就地诊验
E．单独隔离治疗
参考答案：E
低稠度的硅橡胶印模材适用于取（）
A.一次印模
B.二次印模的初印模
C.二次印模的终印模
D.个别托盘的边缘整塑
E.以上均可
— Did Tom's parents go to the meeting yesterday?
— Yes, ____ of them did, but ____ spoke. [ ]
A. each, none
B. both, none
C. neither, both
D. both, neither
