prep cr-55,59，还请大牛指教

wakesleep2011

According to the Tristate Transportation Authority, making certain improvements to the main commuter rail line would increase ridership dramatically.  The authority plans to finance these improvements over the course of five years by raising automobile tolls on the two highway bridges along the route the rail line serves.  Although the proposed improvements are indeed needed, the authority's plan for securing the necessary funds should be rejected because it would unfairly force drivers to absorb the entire cost of something from which they receive no benefit.

Which of the following, if true, would cast the most doubt on the effectiveness of the authority's plan to finance the proposed improvements by increasing bridge tolls?

(A) Before the authority increases tolls on any of the area bridges, it is required by law to hold public hearings at which objections to the proposed increase can be raised.
(B) Whenever bridge tolls are increased, the authority must pay a private contractor to adjust the automated toll-collecting machines.
(C) Between the time a proposed toll increase is announced and the time the increase is actually put into effect, many commuters buy more tokens than usual to postpone the effects of the increase.
(D) When tolls were last increased on the two bridges in question, almost 20 percent of the regular commuter traffic switched to a slightly longer alternative route that has since been improved.
(E) The chairman of the authority is a member of the Tristate Automobile Club that has registered strong opposition to the proposed toll increase.
答案是d,我选的是c，c中指明是“拖延增长”，不正起到削弱作用吗？。。。d的话貌似也有，但我总觉得冒出个20%觉得特别别扭。。。。

wakesleep2011

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?

(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.
答案是B，个人认为这跟停车费没关系，我选的d，但是又觉得"收费5美元“与”commuters"无关。。。。。大牛们。。。。赐教呀。。。。。

Kb24

55题：
D说上次执行类似plan的时候20%的人绕原路了，而且该远路不但只是稍微远了一点点而且 has since been improved.' 说明现在再搞类似PLAN的话必定更大比例 (more than 20%)的人会去绕那条已经被improved的远路了。所以 effectivness明显受影响。C的延时对于集资的effectiveness作用不大


59题：
题目问的是怎么证明mayor's reasoning is flawed。关键就在于要找MAYOR的REASONING里面的问题。而MAYOR的REASONING重点在于：因为多收的费用比来回巴士费还贵了，所以很多开车的人会宁可坐巴士。
B说：开车的人现在交的停车费就早已远远超过来回的巴士费了，所以MAYOR的REASONING是有问题的。
D没有针对MAYOR的REASONING的漏洞。

ymcheswin

55：C只是postpone，早晚还是会起作用的

59：B：mayor想要通过使开车比坐公交贵来达到目的，但是现在开车已经比公交贵了，如果这钟方法有用，那现在就不会出现congestion了。所以削弱

   D 其实某种程度上是加强的，很多人宁愿忍受拥挤也不愿花5美元，说明他们对5美元的收费很抵制，那收费之后他们就更倾向于乘公交来节省5美元。