[求助]prep1—59 谢谢各位了

sprins

prep1-59

A certain mayor has proposed a fee of five dollars per day on private vehicles entering the city, claiming that the fee will alleviate the city's traffic congestion.  The mayor reasons that, since the fee will exceed the cost of round-trip bus fare from many nearby points, many people will switch from using their cars to using the bus.

 Which of the following statements, if true, provides the best evidence that the mayor's reasoning is flawed?

 Which of the following statements, if true, provides the best evidence that the mayor's reasoning is flawed?

 (A) Projected increases in the price of gasoline will increase the cost of taking a private vehicle into the city.

 (A) Projected increases in the price of gasoline will increase the cost of taking a private vehicle into the city.

(B) The cost of parking fees already makes it considerably more expensive for most people to take a private vehicle into the city than to take a bus.

(C) Most of the people currently riding the bus do not own private vehicles.

(D) Many commuters opposing the mayor's plan have indicated that they would rather endure traffic congestion than pay a five-dollar-per day fee.

(E) During the average workday, private vehicles owned and operated by people living within the city account for twenty percent of the city's traffic congestion.

对于答案B没有什么疑问  但想请教大家是怎么排除E的 是E的比例削弱的不够彻底么  谢谢

xfi883

20%太少了，不足以确立城市交通拥挤是市内车辆造成的。起码要50%以上才行。

sprins

就是说不够彻底的关系么 明白了 谢谢