2007英语四级听力综合指导(四十九)
Section B
Passage I
There's a marked tendency for most developed countries to grow steadily noisier each year. This continually increasing amount of noise is uncomfortable and, what is more important, can affect our health. The noise of machines, heavy traffic and airplanes constitutes perhaps the most serious threat to public health. Such noise can interfere with our ability to converse, it can disturb our sleep, and it and quickly make us become nervous wrecks. A loud blast or an explosion may even cause damage to our hearing. But there's another danger-just as great. This is the gradual damage which may be caused if we're continually exposed to noise over several years. Fortunately, technology is progressing at a very rapid rate. Some manufacturers are now designing new silencing mechanisms in their products, and planning experts are even beginning to plan cities according to sound zones.
Questions 11 to 14 are based on the passage you have just heard.
11. According to the passage, which statement is true?
12. What is not mentioned about noise-making in this passage?
13. What harm does noise make to our health?
14. How do people try to solve the problem?
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