听下面一段对话，回答下列各小题。
1.Why does David study seep?
A.Because sleep is important. B.Because sleep is a hot topic. C.Because people can't sleep well.
2.How long does a police officer often work?
A.For ten hours. B.For eleven hours. C.For twelve hours.
3.How does David study sleep?
A.By asking questions. B.By reading articles. C.By doing the experiments (实验).
4.What can we know from the conversation?
A.People can always sleep well after tiring work. B.Blue light may be good for tired people at work.
C.Scientists study sleep by using different music.
听下面一段对话，回答下列各小题。
1.How many fights（航班）to London are there every week?
A.Two. B.Three. C.four.
2.How will the man get to the airport?
A.By taxi. B.By bus C.By car
3.How much will the man pay for the ticket?
A.$ 200. B.$ 300. C.$ 400.
听下面一段对话，回答下列各小题。
1.What are they talking about?
A.TV programs. B.'Animals. C.Ball games.
2.When will Animal World be on?
A.2 am. B.8 pm. C.9 pm.
3.What can we know from the end of the conversation?
A.The man hates to stay up too late. B.The woman likes reading papers.
C.The man doesn't like football matches.
A.9. B.12. C.15.
A.Chinese. B.Science. C.Music.
A.Kate. B.Mary. C.Jane.
