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In order to reduce dependence on imported oil, the government of Jalica has imposed minimum fuel-efficiency requirements on all new cars, beginning this year. The more fuel-efficient a car, the less pollution it produces per mile driven. As Jalicans replace their old cars with cars that meet the new requirements, annual pollution from car traffic is likely to decrease in Jalica.
Which of the following, if true, most seriously weakens the argument?
- A In Jalica, domestically produced oil is more expensive than imported oil.
- B The Jalican government did not intend the new fuel-efficiency requirement to be a pollution-reduction measure.
- C Some pollution-control devices mandated in Jalica make cars less fuel-efficient than they would be without those devices.
- D The new regulation requires no change in the chemical formulation of fuel for cars in Jalica.
- E Jalicans who get cars that are more fuel-efficient tend to do more driving than before
此题的答案是E，瞅着倒是挺明了的。但我想问：
1. 这题虽然是一个plan，但不属于方案类的题目，是吗？
2. 是相关因果吗？
3. 结论说的是requirement可以减少pollution，那weaken思路就是如何使的fulfill了requirement后，pollution仍然没减少就可以了，是吗？
（或者，能否有劳NN提供一下正确的思考思路呢？）
感激！
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发表于 2018-1-16 20:07:08
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