水痘病人应隔离至（）
A.体温恢复正常
B.疱疹全部结痂
C.疱疹开始结痂
D.出疹后7日
E.开始出疹时
参考答案：C, D
The manager says that the project is progressing smoothly,and that all construction work________by
the end of next month. [ ]
A. has been completed
B. has completed
C. will have been completed
D. will have completed
主观呼吸功能障碍程度评定，下列哪项叙述是错的（）
A.通常采用6级制
B.0级：有不同程度肺气肿，但日常生活无影响，无气短
C.2级：较剧烈劳动或运动时出现气短
D.3级：慢走即有气短
E.4级：讲话或穿衣等轻微动作时气短
