单项选择题
[听力原文] M: I’d like to buy a new bike for my younger brother. W: The children’s department is up on the third floor.
A.Flowers. B.A book. C.A blouse. D.A bik
A.One. B.Two. C.Three. D.Four.
A.About every four minutes. B.About every five minutes, C.About every six minutes. D.About every seven minutes.