A:{3,0}
B:{3,0,1}
C:{3,0,2}
D:{3,0,1,2}
大气污染源不包括工业、汽车与居民生活排放出的( )
有关宇宙和天体的说法,正确的是( )
Mrs. Li gets up at 6:30. She gets up very early every day.