1. (2022高三上·济南开学考) 听材料，回答问题。

1. （1） How many people have damaged their hearing now?

   A . 100 million. B . 900 million. C . 466 million.
3. （2） Who is the speaker probably talking to?

   A . Teachers. B . Students. C . Parents.
5. （3） What is the most common reason for hearing loss?

   A . Certain illnesses. B . Heavy noise and aging. C . The damage of hair cells.
7. （4） What is considered as the best way to protect the hearing?

   A . Turn down the music if possible. B . Get your hearing checked regularly. C . Walk away from loud surroundings.