76. A famous singer recently won a lawsuit against an advertising firm for using another singer in a commercial to evoke the famous singer’s well-known rendition of a certain song. As a result of the lawsuit, advertising firms will stop using imitators in commercials. Therefore, advertising costs will rise, since famous singers’services cost more than those of their imitators. The conclusion above is based on which of the following assumptions? (A) Most people are unable to distinguish a famous singer’s rendition of a song from a good imitator’s rendition of the same song. (B) Commercials using famous singers are usually more effective than commercials using imitators of famous singers. (C) The original versions of some well-known songs are unavailable for use in commercials. (D) Advertising firms will continue to use imitators to mimic the physical mannerisms of famous singers. (E) The advertising industry will use well-known renditions of songs in commercials. 答案是E，想请教的是这里的renditions of songs 指的是什么呢，是和C中的original versions 一样,抑或这里的renditions of songs 指的是翻唱，是由imitators 演绎的？
说说我的看法，我觉得狒狒对逻辑的总结很有用，假设是必要条件，一般可用取非削弱来做，象这一题E选项，如果广告行业不用名曲，那famous singers’services cost more than those of their imitators还是less than都没有关系，因为压根跟名歌手无关。
