单项选择题

Many commercials begin with a cheerful song of some kind because ________.

A．pop songs attract viewer attention
B．it can increase their loudness
C．advertisers want to make them sound different from regular programs
D．advertisers want to merge music with commercials
<上一题 目录 下一题>
热门 试题

单项选择题
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
单项选择题
According to the passage, the maximum intensity of sound coming from commercials ________.
A．does not exceed that of programs
B．is greater than that of programs
C．varies over a large range than that of programs
D．is less than that of programs
相关试题