题型：阅读理解 题类：模拟题 难易度：普通
安徽省合肥市第六中学2019年英语高考模拟最后一卷
More than one billion young people risk damaging their hearing through the overuse of smartphones and other audio devices, the UN warned Tuesday, proposing new safety standards for safe volume levels.
Currently, about five percent of the global population, or some 466 million people, including 34 million children, suffer from disabling hearing loss. Young people are particularly likely to develop such risky listening habits. Around half of those between the ages of 12 and 35, or 1.1 billion people, are at risk due to "long and severe exposure to loud sounds, including music they listen to through personal audio devices," the UN health agency said.
In a bid to safeguard hearing, the World Health Organization and International Telecommunications Union issued an international standard for the manufacture and use of audio devices. WHO considers a volume above 85 decibels for eight hours or 100 decibels for 15 minutes as unsafe. The safe listening devices and systems standard calls for a "sound allowance" software to be included in all audio devices, to track the volume level and duration of a user's exposure to sound, and to evaluate the risk posed to their hearing. This system could alert a user if they have dangerous listening habits.
WHO is also calling for parental as well as automatic volume controls on audio devices to prevent dangerous use. While some smartphones and other audio devices already offer some of these features, the UN would like to see a uniform standard used to help protect against disabling hearing loss.
"Think of it like driving on a highway, but without a speedometer in your car or a speed limit," Shelly Chadha of the WHO told reporters in Geneva. "What we've proposed is that your smartphones come fitted with a speedometer, with a measurement system which tells you how much sound you're getting and tells you if you are going over the limit".
Here are opportunities for international student volunteers. You can apply your academic training to overall development programs in service. Group service options are explained here.
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Elder assistance Assist at the elder care center with activities such as playing cards and swapping stories. And you can join the elders on day-trips to the local museums, parks and grocery stores. Or, help prepare, serve and deliver meals at the assisted living center on the reservation. Blackfeet Reservation Montana September 15—September 21 |
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Early Childhood Education Inspire children 1 to 5 years old through doing arts and crafts, reading storybooks, playing with toys, teaching hand washing with soap and water, and more. As a volunteer in the Cook Islands, you make contributions to the future through the youngest of citizens. Rarotonga Cook Islands August 17—August 24 |
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Health Care Health care volunteers are needed at the clinic, serving all of the 1,300 children of the community. To help specialists, volunteers can be engaged to help sort medicines, make cotton balls and take children's temperature, etc. Health Care volunteers do not need any special permit or license. Lima September 3—September 24 |
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Teach English Started in 1996, the program is to teach English in China and build a bridge of friendship and respect. Here you teach English lessons to secondary or university students with all levels of language abilities. After school, you can join your students in a number of cultural activities to extend the day's English lessons. Xi'an August 22—August 28 |
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