1-a- expository / b-warning young people against the possible risks posed by music players

2-Cause: Listening at the maximum 105 decibels for more than an hour a day.

Consequence: Young people have permanent hearing damage.

3-a- young people are 'frighteningly unaware' of the dangers of listening to their iPods or MP3 players too loudly. / b- taking regular breaks from their headphones / give their ears a rest.

4-a. heed / b. drown out / c. premature

5-a. The Royal National Institute for Deaf People / b-Young people.

6-Yes, I would, because the warnings are supported by well-documented scientific data from experts.