Quiz: How much do you know about hearing protection?
By Guo Meiping
["china"]
The annual World Hearing Day is held on March 3 to raise awareness on how to prevent deafness and hearing loss and promote ear and hearing care across the world. 
(VCG Photos)
Test your knowledge of hearing loss and hearing protection!
According to World Health Organization (WHO), around 466 million people worldwide have disabling hearing loss, and 34 million of them are children.
1
A person who has a hearing threshold of higher than ... decibels is considered to have hearing loss?
1 / 7
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2
What is the cause of hearing loss?
2 / 7
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3
Could age-related hearing loss be reversed?
3 / 7
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4
What measure can help aged people to prevent or delay hearing loss?
4 / 7
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5
Is noise an avoidable cause of hearing loss?
5 / 7
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6
The noise could injure one's hearing if it is about ... decibel level?
6 / 7
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7
How to prevent hearing loss?
7 / 7
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