未知题型
Commercials create che sensation of loudness because____________________.
A.TV stations always operate at the highest sound levels
B.their sound levels are kept around peak levels
C.their sound levels are kept in the middle frequency ranges
D.unlike regular programs their intensity of sound varies over a wide range
- A.A.TV
B.their
C.their
D.unlike
【参考答案】
B
第2段第1句指出，人们对声音的感觉会受音量峰值的影响，后面进一步说明为达到此目的，广告人使用的技巧。再结合本......
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