Q33:             

Which of the following, if true, most logically completes the passage?

A recent poll found that over 80 percent of the residents of Nalmed Province favored a massive expansion of the commuter rail system as a means of significantly easing congestion on the province’s highways and were willing to help pay for the expansion through an increase in their taxes.  Nevertheless, the poll results indicate that expansion of the rail system, if successfully completed, would be unlikely to achieve its goal of easing congestion, because _______.

1. most people in favor of expanding the rail system reported less congestion during their highway commute as the primary benefit they would experience
2. of the less than 20 percent of residents not counted as favoring the expansion, about half claimed to have no opinion one way or the other
3. the twice-daily periods of peak congestion caused by people commuting in cars have grown from about an hour each to almost two and a half hours each in the past 20 years
4. expanding the commuter rail system will require the construction of dozens of miles of new railbed
5. the proposed expansion to the commuter rail system will make it possible for some people who both live and work at suburban locations to commute by rail

答案是A哦，看不懂，请指教~~~~

我的理解：

题干摘要：80%的人支持扩建城际铁路，因为可以缓解高速公路的拥堵。但是如果铁路建成，可能达不到缓解拥堵的目的，因为：

A、大多数支持扩建城际铁路的人说，在高速公路上较少的拥堵是他们体验到的主要的好处。

由于大多数支持扩建城际铁路的人体会到了高速公路的好处，那么即使城际铁路建成，他们也不会去使用。所以如果铁路建成，也达不到缓解拥堵的目的。