08年职称英语考试模拟综合完型填空真题三.docx

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08 年职称英语考试模拟综合完型填空真题

Singing Alarms Could Save the Blind

If you cannot see, you may not be able to1 find your way out of a burning building-and that could be fatal. A company in Leeds could change all that2 1 directional

sound alarms capable of guiding you to the exit.

Sound Alert, a company 2 the University of Leeds,

is installing the alarms in a residential home for 3

people in Sommerset and a resource center for the blind in Cumbria. 4 produce a wide range of frequencies that

enable the brain to determine where the 5 is coming

from.

Deborah Withington of Sound Alert says that the alarms use most of the frequencies that can be 6

by humans. "It is a burst of white noise 白噪音：音响或电力嗓音 7 people say sounds like static 静电噪声 on the radio," she says. "Its life-saving potential is g

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