1. (2021高一上·雅安开学考) 听材料，回答问题。

1. （1） How does the speaker sound?

   A . Worried. B . Confident. C . Excited.
3. （2） What was the main subject of the study?

   A . Sitting too much time. B . Fighting against heart disease. C . Having different entertainment. (娱乐)
5. （3） When was the end of the study?

   A . In 2001. B . In 2016. C . In 2017.
7. （4） Which age group had the highest number of people watching TV?

   A . Children. B . Teenagers. C . The elderly.