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  3. Fact 1: Television advertising is becoming less effective: the proportion of brand names promoted on television that viewers of

Fact 1: Television advertising is becoming less effective: the proportion of brand names promoted on television that viewers of

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问题 Fact 1: Television advertising is becoming less effective: the proportion of brand names promoted on television that viewers of the advertising can recall is slowly decreasing. Fact 2: Television viewers recall commercials aired first or last in a cluster of consecutive commercials far better than they recall commercials aired somewhere in the middle. Fact 2 would be most likely to contribute to an explanation of Fact 1 if which of the following were also true?
选项 A、The average television viewer currently recalls fewer than half the brand names promoted in commercials he or she saw.
B、The total time allotted to the average cluster of consecutive television commercials is decreasing.
C、The average number of hours per day that people spend watching television is decreasing.
D、The average number of clusters of consecutive commercials per hour of television is increasing.
E、The average number of television commercials in a cluster of consecutive commercials is increasing.
答案E
解析 因为(E)指出在一组中广告的数量逐渐增加，(E)表明从比例上说，越来越多的广告是在中间位置播放的。因此，(E)通过表明越来越多的广告是在观众难以回忆起来的位置播放的，来帮助事实2来解释事实1，(E)是正确答案；选项(A)证明电视广告的无效，但不能帮助事实2来解释事实1；选项(B)指出事实2同事实1矛盾，而不是去解释事实1，因为它指出每一组中广告的数量是减少的；选项(C)和(D)帮助解释事实1，(C)通过描述观看习惯的一种变化，而(D)通过描述节目的一种变化，但都没有将事实2与事实1联系起来。
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