单项选择题
[听力原文] M: Look at the beautiful cloud. W: Yes, it’ s magnificent, but we’ d better close the windows. The mosquitoes will appear as soon as it gets dark.
A.Dawn. B.Midnight. C.Dusk. D.Noon.
A.Four years old. B.Five years old. C.One year old. D.It’ s new.
A.Only one student of the department. B.All the students of the department. C.Some students in the department. D.None of the above.