报纸按照出版时间分类有（）。
A.日报
B.早报
C.晚报
D.周报
参考答案：A, B, C, D
-Do you know ______ before?
-In the People's Hospital. [ ]
A. where is Tingting's father working
B. where did Tingting's father work
C. where Tingting's father is working
D. where Tingting's father worked
人禽流感样品采集、运输和检测
ng's father is working