请教prep逻辑

关灵韶

10. (25259-!-item-!-188;#058&001774)

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?

(A) In 1994 Videorama rented out more videos than it sold.
(B) In 1994 two new outlets that rent but that do not sell videos opened in Centerville.
(C) Most of the video rental outlets in Centerville rent videos at a discount on certain nights of the week.
(D) People often buy videos of movies that they have previously seen in a theater.
(E) People who own videos frequently loan them to their friends.

答案E

 我觉得E不是正好加强了Brad:  There must be another explanation:   怎么能选这个呢  

请大家指点

andyian

首先理解一下Brad的观点:
Videorama只卖出了4000 videos, 而整个地区video rental减少了10000，所以Videorama的出现不是video rental减少的唯一原因.

Brad观点的assumption是，整个地区的video rental的需求是一定的, 所以还有其他原因导致了6000 video rental的差别。

E选项的意思是说，买了video的人常常会借video给他们的朋友看，那么这些朋友就不需要去rent video了. 这样整个地区的video rental的需求是不是就减少了?

houzhongxu

以下是引用关灵韶在2009-6-4 9:25:00的发言：

10. (25259-!-item-!-188;#058&001774)

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?

(A) In 1994 Videorama rented out more videos than it sold.
(B) In 1994 two new outlets that rent but that do not sell videos opened in Centerville.
(C) Most of the video rental outlets in Centerville rent videos at a discount on certain nights of the week.
(D) People often buy videos of movies that they have previously seen in a theater.
(E) People who own videos frequently loan them to their friends.

答案E

 我觉得E不是正好加强了Brad:  There must be another explanation:   怎么能选这个呢  

请大家指点

第一步，问B驳斥J怎么不足了，也就是说，要替J说话

第二步，说了一堆，J说影碟出租下降时因为V贱价出卖，B说不对，V只买了很少的比例，应该不是这个原因

第三步，看选项

A说V租的多于买的，原文没这个比较，干掉

B说C这边有新开的，但人家不卖，扯！干掉！

C说大部分C租什么折扣价什么一个时间,无关！

D人们买的影碟都在电影院看过，没提过，杀！

E说人们拥有的片子借给朋友，等等，B说原因应该是贱价出卖的原因，而本选项提出了一个其他的观点，驳斥了它

那就选E吧

Q.E.D

可乐_cola

我也觉得选A  BE都是属于支持BRAD的another explanation  而CD与题目无关   brad只考虑到了V的销售量  而没有考虑到出租量

pc123

Agree with andiyan,

因为购买了Vedio的人会将自己的Vedio不断地借给自己的朋友，那么自己的朋友就不需要去租借Vedio了。

A不正确的原因是，10，000是总地区1994与1993租借的差距。无论是否新开的 Videorama rented out more videos than it sold， 他的租借数最终是要与其他的租借数相加的。

假设1993年租借数是X， 那么1994年租借数是X-10，000； 这个式子告诉我们，videorama的租出数与10，000这个数是没有关系的。

不知说的请不清楚。