求这道题的解析！！

Claire2333

To provide extra revenue for improving city bus service, the mayor of Greenville proposed a fare increase. The director of the bus service, however, pointed out that the previous bus fare increase had resulted in so many regular riders abandoning the bus system altogether that revenues from bus service had decreased. Another fare increase, the director argued, would only lead to another revenue drop. The director s argument depends on which of the following assumptions？

A．The previous fare increase was the same amount as the proposed fare increase.

B．Fare increases do not necessarily lead to lower revenues from city bus service.

C．A decrease in fares would result in increased ridership and increased revenues from bus service.

D．The fare increase would make Greenville" s bus service much more expensive than bus services in other comparable cities.

E．Some of the people currently using the bus have the option of not traveling by bus

答案是E, 我觉得A也有道理

求大神们解析

AlanHeeee

之前和现在涨价的幅度是不是一样和原文的事无关

原文是之前涨了怎么样，所以现在再涨就怎么样
是有没有涨价的事情

无关

伯尔尼的顾故

同上，涨价幅度无关；不过这个E选项有点tricky啊...

Young_Y_Y

试一下AE选项取反就很明显了：
A取反之后：这次的涨幅跟之前不一样---》涨价同样可能导致做公交车的人减少
E取反之后：所有现在坐公交车的人都没有除了公交车之外的交通选择--》就算涨价他们也只能继续坐公交车，所以坐公交车的人不会减少，所以就不会出现director说的这个情况。

因为是assumption，所以E必须成立director说的才有效，所以取反之后如果直接destroy argument的就是正确选项——当然这个做法的缺点就是贼慢，但是事后分析还是挺有用的