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题目
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-frequency sounds can mask higher frequency sounds, advertisers filter out any noises that may drown out the primary message. In addition, the human voice has more auditory(听觉的) impact in the middle frequency ranges. Advertisers electronically vary voice sounds so that they stay within such a frequency band. Another approach is to write the script. so that lots of consonants(辅音) are used, because people are more aware of consonants than vowel(元音) sounds. Finally, advertisers try to begin commercials with sounds that are highly different from those of the programming within which the commercial is buried. Because people become adapted to the type of sounds coming from programming, a dramatic change in sound quality draws viewer attention. For example, notice how many commercials begin with a cheerful song of some type.
The attention-getting property of commercials can be seen by observing one-to-two-year-old children who happen to be playing around a television set. They may totally ignore the programming. However, when a commercial comes on, their attention is immediately drawn to it because of its dramatic sound quality.
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
更多“Every year television stations receive hundreds of complaints about, the loudness of adver”相关的问题
第1题
News bulletins are broadcast every hour on many ______.
A．commercial television stations
B．cable television networks
C．radio stations
D．news magazine programs
第2题
A．newspapers
B．magazines
C．wire services
D．radio and television stations
第3题
How many children visitors does the Louvre receive every year？
A．1 million．
B．1.5 million．
C．2 million．
D．2.5 million．
第4题
In ______, state-owned television stations would NOT accept advertising.
A．Sweden
B．Germany
C．France
D．Italy
第5题
听力原文： A twenty-one-year-old American named Philo Farnsworth built the first working television receiver in nineteen twenty-seven. Many scientists around the world had made important discoveries that led to the development of television. But Philo Farnsworth had recognized as a boy that electrons could capture a picture sent as light and sound waves through the air.
Over the years, the technology has changed and improved. But the idea behind the television broadcast is still the same. TV stations send a powerful signal from a transmitting antenna. An antenna connected to a television set receives the signal.
The problem with this system is that the receiver antenna has to be in line with the transmitting antenna. Mountains or tall buildings can interfere. One solution is cable television.
This system began in the nineteen forties in Pennsylvania. Only a few television stations existed then, and they were in large cities. People in small towns could not receive the signals. So a store owner put an antenna on top of a pole and placed it on a nearby mountain. This antenna received the television signal. Wires led from the antenna to the store. The cable brought clear pictures to the television sets inside. Later, the idea of cable television spread to cities, to provide people with more stations to watch.
Today, people can watch hundreds of stations. And another way to receive them is with a satellite dish antenna. A small round device of the size of a pizza can receive signals from satellites .high above the Earth. The antenna is connected to a special receiver which connects to the television set. Some broadcasts over satellite can be watched free of charge. But the others cost money, just like cable service.
The passage mainly focuses on ______.
A．the importance of TV
B．the function of TV
C．the production of TV
D．the evolution of TV
第6题
Visa has spent hundreds of millions of dollars every year __________.
A.to maintain the airtight security system
B.to recruit engineers to keep the network up
C.to introduce new security equipments
D.to develop the most advanced risk-management technology
第7题
Public radio and television stations, on the【65】hand, do not have advertisements and people do not have to【66】to watch them. These stations gain their money from the【67】, from private companies, and from some of the【68】who watch or listen their programs. The【69】government and some large corporations give【70】,large gifts on money, to the public stations.
(66)
A．products
B．programs
C．produce
D．governments
第8题
Public radio and television stations, on the【C8】______hand, do not have advertisements and people do not have to【C9】______to watch them. These stations gain their money【C10】______the government, private companies, and from some of the【C11】______who watch or listen to their programs. The【C12】______government and some large corporations give【C13】______, large gifts on money, to the public stations. Small businesses and people also【C14】______money to their local public radio and television stations.
ABC, CBS, and NBC are the three【C15】______commercial radio and television【C16】______in the United States. Most local commercial radio and TV stations【C17】______their programs from one of these national networks.【C18】______example, each network has a TV news program in the evening,【C19】______the local stations broadcast in addition to their【C20】______local news programs.
【C1】
A．that
B．this
C．it
D．which
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