E X E R C I S E 2: Choose the correct answer according to the passage.
1. According to the passage, the new device
A) can make the noise it's aimed at 10 to 15 decibels quieter
B) lowers all industrial noise by at least half
C) generates sound waves of 10 to 15 decibels
D) can weaken a noise of 10 to 15 decibels by 50 to 70 per cent
E) instantaneously reduces noise to a level of 10 to 15 decibels
2. According to the writer, it is unrealistic to
A) wear earplugs to block out noise
B) expect to live in peace and quiet
C) take the theory of antinoise seriously
D) suppress human voices scientifically
E) play rock music CDs too loudly
3. The device manufactured by some Japanese and American firms
A) has solved the problem of industrial noise
B) generates sound waves which are much louder than the targeted noise
C) produces sound waves which partially cancel out the problem noise
D) is not big enough to be able to eliminate all noise
E) reflects the problem sound waves back onto themselves
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