KD的GMAT疑惑之逻辑 003

KingsDi

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.

主要是...我个SB，竟然选了答案解析说明了无关的B和C选项， 其实答案是D...求助！！！

vertex顶点

答案是A
原文说RDS stations数量上升在94-96，但带有接受RDS设备数量并没有增加，所以收听人数应该没变，问假设：
A选项很绕，读出来是很少的radio stattion播出节目在1994后，是给那些有设备的人早先收不到信号的
＝stattion播出节目在1994年后给那些人都是早先就能接到信号的，所以人数没变，信号覆盖地区没变，设备也没有增加。
B 在1996大部分的人生活在收听节目的地区已经有一个设备了去接收RDS了，文章问的是94-96station数量和人数的关系，B选项说的是96年的人有设备收节目，无关选项。
C 显然无关
D 96年没有设备的人不能接收到任何节目从station在1994年以后，看似好像有点道理，仔细一看就发现这个选项还是在说人有设备的问题，无关
E 显然无关

KingsDi

vertex顶点 发表于 2013-9-21 14:07
答案是A
原文说RDS stations数量上升在94-96，但带有接受RDS设备数量并没有增加，所以收听人数应该没变， ...

怎么我这里的资料显示 ，答案是DDDDD...  你确定么？

vertex顶点

KingsDi 发表于 2013-9-21 16:23
怎么我这里的资料显示 ，答案是DDDDD...  你确定么？

你资料有问题吧，这道题你上百度上搜一下