逻辑题，求救！！

socool1990

大意是说，因为觉得大多数人都不喜欢看长的televised political messages, 所以广告商就改短的了。去年，有个人作了一个长达一个小时的广告，at the begining of the half-hour slot a substantial portion of the viewing public had turned into that station. 结论说，多数人开始喜欢长的广告了。
削弱题：正解是：the half-hour-long ad was aired during a time slot normally taken by one of the most popular prime-time shows.
我选的是：Most short ads are aired during a wide range of programs in order to reach a broad spectrum of viewers.
我想的是，因为它在多个电台播放，所以收看率就高了，而不是人们开始喜欢长广告，所以起到削弱的作用。但是为什么不对呢？

winny0821

把题贴出来吧。。。

socool1990

because ot was long thought that few people would watch televised

political messages, most televised political ads, like commercial

ads, took the form of short messages. Last year, however, one

candidate produced a half-hour-long ad. At the begining of the half-

hour slot a substantial portion of the viewing public had turned into

that station. Clearly, then, many more people are interested in

lengthy televised political messages than was previously thought.

thinkingape

正确选项更直接，正因为在poluar shows之间，才会有很多人去观看。。而

不是人们喜欢看。。而且注意at the beginning这个词

thinkingape

然后，就算它在wide range of program间播放，人们也不一定会看到。。

winny0821

At the begining of the half-hour slot a substantial PORTION of the viewing public had turned into that station.That's why your choice can't weaken the conclusion!

bah-torontoer

楼上大N正解！