B. The increase in noise is a problem which cannot yet be solved by modern technology. Р C. Gradual noise over a long period may have just as harmful an effect as loud or sudden noise. Р D. There is no real solution to the problem of increasing noise in modern. Р Р12.РA. Noise made by people.Р B. Noise made by machines. РC. Noise made by heavy traffic.РD. Noise made by airplanes.Р Р13.РA. Making us feel exciting.Р B. Making us become nervous wrecks. РРР Р РC. Damaging our hearing.РD. Spoiling the environment.Р Р14.РA. New silencing mechanisms are being designed.Р B. New cure is experimented to solve the hearing problem. Р C. Sound is forbidden in the city. Р D. Some factories must be closed.
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