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题库 / Prep2007E1-CR-10
Jennifer: Video rental outlets in Centerville together handled 10,000 fewer video rentals in 1994 than in 1993. The decline in rentals was probably due almost entirely to the February 1994 opening of Videorama, the first and only video rental outlet in the area that, in addition to renting videos, also sold them cheaply.
Brad: There must be another explanation: as you yourself said, the decline was on the order of 10,000 rentals. Yet Videorama sold only 4,000 videos in 1994.
Which of the following, if true, would most seriously weaken the force of the objection that Brad presents to Jennifer's explanation?
In 1994 Videorama rented out more videos than it sold.
In 1994 two new outlets that rent but that do not sell videos opened in Centerville.
Most of the video rental outlets in Centerville rent videos at a discount on certain nights of the week.
People often buy videos of movies that they have previously seen in a theater.
People who own videos frequently loan them to their friends.
我认为是果因推理。
果：Video rental outlets in Centerville together handled 10,000 fewer video rentals in 1994 than in 1993
因：A new store Videorama opened, which offered rental service and also sold the videos cheaply.
两者的观点
Jennifer：C地租赁的减少是因为V卖碟
Brad：C租赁的减少和V卖碟没关系
问题是weaken Brad‘s opinion，说白了就是要strengthen Jennifer的观点。
因此E. 完全符合(V卖碟导致了C租赁的减少)的逻辑链。
再看A. 我的理解错误在于：我把Centerville看成了某个store，而不是题意中的某地。因此不管V到底租出去了多少，因为C地整体上的rental的数量变低了，所以我们要找出能解释rental变少的原因，而本题里就是因为V开始卖碟了。
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