红霉素用于（）
A．鼠疫
B．恙虫病
C．螺旋体病
D．立克次体病
E．支原体肺炎
参考答案：E
Sandy went to Tibet by train this summer for the first time. She had an unusual _________.
A．experience
B．experiment
C．knowledge
D．condition
电影是一种时间艺术
