请教=PREP2-11

alohabrian

Radio
stations with radio data system (RDS) technology broadcast special
program information that only radios with an RDS feature can receive.  Between 1994 and 1996, the number of RDS radio stations in Verdland increased from 250 to 600.  However,
since the number of RDS-equipped radios in Verdland was about the same
in 1996 as in 1994, the number of Verdlanders receiving the special
program information probably did not increase significantly.

Which of the following is an assumption on which the argument depends?

 

(A)
Few if any of the RDS radio stations that began broadcasting in
Verdland after 1994 broadcast to people with RDS-equipped radios living
in areas not previously reached by RDS stations.

(B) In 1996 most Verdlanders who lived within the listening area of an RDS station already had a radio equipped to receive RDS.

(C) Equipping a radio station with RDS technology does not decrease the station's listening area.

(D)
In 1996 Verdlanders who did not own radios equipped to receive RDS
could not receive any programming from the RDS radio stations that
began broadcasting in Verdland after 1994.

(E) The RDS radio stations in Verdland in 1996 did not all offer the same type of programming.

请教A是怎么推出来的。
我的逻辑有问题吗？
本人逻辑：
原题的fact: number of radio stations increase; however, the number of RSD-equipped radion remain stable
    
原题的conclusion: the number of Verdlanders receiving the special
program remain stable

从fact 到 conclusion 必须的前提是 rsd-radio的数量 代表了 收听 人数， 也就是 没有 rsd-radio的人无法收听 rsd节目。
所以 选D

alohabrian

我发觉是我没理解A选项的意思，A并不是说coverage，而是实实在在的说, 94-96年间，Radio的听众数量一点也没增加。我懂了。

    Few if any of the RDS radio stations that began broadcasting inVerdland after 1994 broadcast to people with RDS-equipped radios livingin areas not previously reached by RDS stations.

            

D不好在于 D是在重复 文章的内容。

sausau

你太可爱了！
我喜欢这种帖子！

dongdonkey

我觉得楼主理解的不对。

A说的是94年以后的基站，很少能够覆盖到那些有RDS收音机，但住在之前信号覆盖不到的地方。体现了多有的基站都是一样的。

D说的是96年，没有RDS收音机的V人不能够收到自94年以后建立的RDS基站发出的任何节目。注意，说的是收不到94年以后的基站的信号，那么94年以前的基站的信号呢？没说。所以不对。

sunjin1988

 我的理解是对the special program information probably did not increase significantly.他假设了什么 作者认为既然收音机数量没变 所以即使增多station也不会increase significantly
 他假设了如果station增多的话如果收音机也同时增多的话 那么接受到的信息就一定增加，他忽略一点那就是万一station增加 但是它并不会覆盖那些区域 也就是说有的地方收不到信号。。。。

sangchangtw

恩恩..了解了!!不過可以解釋一下 A選項 few if any..怎麼翻譯呢  總覺得前面三個字不知道怎麼翻~~