英语四级阅读理解练习题第042组

s want to merge music with commercials

4. One of the reasons why commercials are able to attract viewer attention is that .
A. the human voices in commercials have more auditory impact
B. people like cheerful songs that change dramatically in sound quality
C. high-frequency sounds are used to mask sounds that drown out the primary message
D. they possess sound qualities that make the viewer feel that something unusual is
happening

5. In the passage, the author is trying to tell us .
A. How TV ads vary vocal sounds to attract attention
B. how the loudness of TV ads is overcome
C. how advertisers control the sound properties of TV ads
D. how the attention-getting properties of sounds are made use of in TV ads

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