We arrived in Beijing 8: 20 Friday.[ ]
A. at, on
B. in, on
C. on, at
D. in, at
答案:A
His failure resulted from his____ lateness for class.[ ]
A. constant
B. gradual
C. eventual
D. always
建筑施工噪音、企业废气废水废渣、放射辐射等污染行为,属于哪个部门具体处理呢?()
A.公安110
B.环保12369
C.市政12319
D.工商12315