【单选题】It is said that ____ young people may lose the abilities to hear after five years if they listen to MP4 players which are too loud for more than five hours a week.
【简答题】阅读理解。 'Millions of young people will lose their hearing in five years if they listen to MP3 or MP4 players at a too high voice every day,' scien tists say recently. Do you often listen to MP3 players ...
【单选题】Millions of youngsters across Europe could suffer ____ hearing loss after five years if they listen to MP3 players at too high a volume for more than five hours a week, EU scientists warned.