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?

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.

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.

我选e,因为private vehicles 只占traffic congestion的20%，所以限制private vehicles并不能解决根本问题。而答案选b,是因为停车费已经很高了，5块钱对车主根本构不成影响吗？如果这样理解的话，那这两个选项好像都对亚！

你们是怎么理解的？

问题是问下列哪个证明市长的推理是有缺陷的。而不是要WEAKEN市长的CLAIM。而且E是

支持，而不是WEAKEN，E说的是少部分堵塞是市内车造成的，大部分是从市外来的车导致的

，正好支持市长的建议。

 问题是问下列哪个证明市长的推理是有缺陷的。而不是要WEAKEN市长的CLAIM

这就是flaw和weaken的区别

flaw肯定是文章已有内容的推理缺陷，即必须和原文有关，不能找他因

weaken除了，同因异果，异因同果，因果导致以外，还可以找他因的