A、People may use portable laptop computers to listen to music. B、People may set them at high volume when they listen to music. C

admin2009-09-12  64

问题  
Electronic devices are changing the way people listen to music. But studies show the devices may be causing hearing loss in my people. Some experts say people may be playing them too loud and for too long.
Researchers from Zogby International did a study for the American Speech-Langusge-Hearing Association. It involved 300 high school students and 1,000 adults. They were asked about their use of portable music devices. Some of the most popular are Apple Computer’s iPud, C.D. players and portable laptop computers. 40 percent of students and adults said they set the sound levels, or volume, at high on their iPods. But students were two times more likely to play the music at a very loud volume. More than half of the students said they would probably not limit their listening time. And about a third said they were not likely to reduce the volume.
The study found that more than half of the students and less than 40 percent of the adults had at least one kind of hearing loss. Heating experts say part of the problem is the listening equipment people are using. They say large earphones that cover the whole ear are probably safer than the smaller earplugs that come with most music players. Earplugs are thought to be less effective than earphones in blocking out foreign noises.
Hearing loss may not be apparent for years. But once it happens, it is permanent. About 30 million Americans have some hearing loss. One third of them lost their heating as a result of loud noises.
How can listening equipment cause hearing loss in people?

选项 A、People may use portable laptop computers to listen to music.
B、People may set them at high volume when they listen to music.
C、People may listen to music while walking on the street.
D、People may use large earphone when they listen to music.

答案B

解析 本题问“电子设备将如何导致人们的听觉损失?”短文起始部分提到,But studies show the devices may be causing hearing loss in many people. Some experts say people may be playing them too loud and for too long. 由此可见,在探讨为什么这些电子设备会导致人们听力丧失的原因时,某些专家认为是因为人们使用时音量调得过大,而且听音时间太长。据此可以断定[B]“人们在听音乐的时候,音量设置得很高”正确。
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