题目内容：

Playing a musical instrument throughout: your life protects your hearing in old age, a Canadian study suggests. The study, published in Psychology and Aging, carried out hearing tests on 74 adult musicians and 89 non-musicians. It found a 70-year-old musician’s hearing was as good as that of a 50-year-old who did not play.

Hearing normally declines as people age. By 60, 10-30% of people have moderate hearing loss. By 80, that goes up to as many as 60%. Problems are particularly seen in the central auditory (听觉的) processing system, which is associated with understanding speech, especially when there is background noise.

Previous studies have shown musicians have better hearing than non-players. But this research, by a team at the Rotman Research Institute in Toronto, looked at adults of all ages - from 18 to 91 - to see how people were affected as they aged. They carried out hearing tests on 74 amateur and professional musicians (who had played since the age of 16, were still practising and had been given formal music lessons) and 89 non-musicians (who had never played an instrument). Musicians were significantly better at picking out speech against noise.

The researchers suggest that lifelong musicianship reduces age-related changes in the brain, probably due to musicians using their auditory systems at a high level on a regular basis.

The head of biomedical research at Action on Hearing Loss, Dr Ralph Holme, said: “While this study suggests that musicians might be more able to cope with the consequences of hearing loss, it is far better to reduce damage in the first place by using appropriate ear protection. We have always campaingned for everyone who plays a musical instrument or listens to loud music to wear hearing protection, like earplugs, which reduce the risk of damaging your hearing permanently.”

1.What can we learn from Paragraph 2?

A. A person aged 80 will lose 30% hearing.

B. A person aged above 60 must have bad hearing.

C. People have fewer problems with background noise.

D. People’s hearing usually becomes worse when they get older.

2.What can we get from the Canadian study?

A. It tested the hearing of 162 people.

B. The finding of the study wasn’t published publicly.

C. Playing a musical instrument may do good to hearing.

D. Musicians were as good at picking out speech against noise as non-musicians.

3.Why don’t musicians change much in their brain as they age?

A. They like to take more exercise.

B. They use their hearing more and regularly.

C. They don’t expose themselves to background noise.

D. They pay more attention to protecting their hearing.

4.How can we deal with hearing loss according to Dr Ralph Holme?

A. Get help from musicians.

B. Listen to loud music less.

C. Protect hearing properly.

D. Play a musical instrument more.

5.The author wrote the passage to ________.

A. entertain the readers

B. advertise a musical instrument

C. complain about people’s hearing loss

D. inform readers of a research on hearing