1. (2023八上·襄州期末) 听录音，回答问题。

1. （1） Why is it difficult for students to get enough rest?

   A . Because they have too much homework. B . Because they play very late. C . Because they get up early.
3. （2） How many hours of sleep do teenagers need?

   A . 8 hours. B . More than 9 hours. C . More than 7 hours.
5. （3） How will people become if they don't get enough sleep?

   A . They will become fat B . They will become popular. C . They will become ill.
7. （4） Who did a survey of kids aged between 8 and 13?

   A . A group of teachers B . A group of American scientists. C . Some scientists.
9. （5） What should teenagers not do?

   A . Teenagers shouldn't be tired. B . Teenagers shouldn't do more exercise. C . Teenagers shouldn't eat too much junk food.