[填空题]Service stations, motels and restaurants promoted the development of the interstate highway system.

[填空题]Service stations, motels and restaurants promoted the development of the interstate highway system.

[填空题]Service station, motels and restaurants promoted the development of the interstate highway system.

[单项选择]Tony was promoted after
A. three months.
B. six months.
C. twelve months.

[单项选择]What is being promoted
A. A type of cooking oil
B. A brand of olives
C. A type of cake mix
D. A brand of butter

[单项选择]Will Edward be promoted
A. Yes.
B. No.
C. Not mentione

[单项选择]Educational TV stations offer teaching in various （　） ranging from home nursing to art appreciation.
A. courses
B. directions
C. points
D. subjects

[单项选择]Every year television stations receive hundreds of complaints about, the loudness of advertisements. However, federal rules forbid the practice of making ads louder than the programming. In addition, television stations always operate at the highest sound level allowed for reasons of efficiency. According to one NBC executive, no difference exists in the peak sound level of ads and programming. Given this information, why do commercials sound so loud
The sensation of sound involves a variety of factors in addition to its peak level. Advertisers are skilful at creating the impression of loudness through their expert use of such factors. One major contributor to the perceived loudness of commercials is that much less variation in sound level occurs during a commercial. In regular programming the intensity of sound varies over a large range. However, sound levels in commercials tend to stay at or near peak levels.
Other "tricks of the trade" are also used. Because low-freq
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