Do you often listen to music at loud volumes （音量）？You should know that this habit is bad for your hearing，according to the World Health Organization （WHO）
    Many young people are at risk of hearing loss because of listening to loud noise for too long，WHO said.Listening to music or watching TV shows at loud volumes can harm your hearing.
    The United Nations has standards （標準） for safe listening.It is not safe to listen to sounds that are louder than 85 decibels（dB 分貝） for eight hours or 100 dB for 15 minutes.The sound of a busy road is about 85 dB and the sound of a rock concert can be about 100 dB.
    Loud noise is harmful to our inner ear（內耳）.Most of us are born with about 16，000 hair cells（毛細胞） in our inner ears.These cells detect （檢測） sounds.However，listening to loud noise for a long time can make these cells work too hard and cause some of them to die.This is what causes hearing loss.
    Some people might think that their music isn't all that loud.But this can depend on where you are.For example，if you are in a noisy place like the subway，you might turn up your music too loud without realizing it.Later，when you listen to it at the same volume in a quiet place，you might feel uncomfortable.
    WHO said the "safe level （水平）"for most sounds is below 80 dB for up to 40 hours a week.A level of 80 dB is about the noise of a subway.

（1）Which can harm our ears according to the writer？

C

C

A．Going to work by subway.
B．Watching TV programs.
C．Enjoying a rock concert.
D．Staying on a busy road for 15 minutes.
（2）How does too much loud noise harm our hearing？

D

D

A．It can make hair cells grow too fast.
B．It can change the outlook of our ears.
C．It can stop hair cells from detecting sounds.
D．It can cause deaths of some of the hair cells.
（3）What does the writer try to tell us through this article？

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C

A．Stop watching TV shows.
B．Don't listen to music any more.
C．Never listen to loud noise too long.
D．We'd better not go to work by subway.