听下面一段独白，回答以下小题。
1.What can be clearly affected if teenagers lack sleep?
A. Their spirits. B. Their long-term health. C. Their academic performance.
2.What is to blame for teenagers not getting enough sleep according to the speaker?
A. Poor diet. B. Lack of exercise C. Too much entertainment
3.What advice does the speaker give to teenagers who have trouble getting to sleep?
A. Listen to music. B. Read a book. C. Drink hot chocolate.
4.What does the speaker suggest schools should do?
A. Start lessons later. B. Shorten the school day. C. Offer classes in the evenings.
听下面一段较长对话，回答以下小题。
1.What did Nick and Mel do when they were young?
A. They learned to act at school. B. They went to live concerts with their father.
C. They were encouraged to play music by their mother
2.When was the band Krispy started?
A. After Nick and Mel played together. B. After Nick began studying at a music school.
C. After two musicians saw Nick and Mel playing.
3.What do we know about the band in the first year?
A. They recorded two albums. B. They joined a music company.
C. They were welcome in the concert
4.What has disappointed the man?
A. Parents forbade them to join a company. B. His illness delayed a new album recording.
C. The first album has sold under a million copies.
听下面一段较长对话，回答以下小题。
1.What does the man mainly mention about Helen?
A. Changes in her character.
B. Problems with teachers.
C. Relationships with parents.
2.What does the man decide to do in the end?
A. Have a talk with Helen.
B. Talk with Helen’s father.
C. Spend more time with Helen.
3.What can we learn about Helen?
A. Her parents are very busy.
B. Classmates dislike her.
C. Teachers worry about her.
听下面一段较长对话，回答以下小题。
1.Why does the woman talk to the man?
A. He lost his student visa.
B. He often makes trouble.
C. He is often absent from class.
2.What is the worst result of the man’s behavior?
A. He’ll be sent back home.
B. He’ll have to restart his course.
C. He’ll stay in the police station.
听下面一段较长对话，回答以下小题。
1.What does the man say about his job?
A. The boss is really nice.
B. Workmates look friendly.
C. Workplace is small and noisy.
2.What can we learn from the conversation?
A. The boss told the man all the rules.
B. Mark will become the boss this year.
C. The man will cooperate with Mark.
What does the woman mean?
A. She doesn’t need the man’s help.
B. She expects the man to move the desk.
C. She wants to remove the books from the desk.
