求助一道OG官方prep里的逻辑题

Helenmm

Ten years ago, the country of Vorland adopted new automobile safety regulations requiring air bags and better seat belts in all new automobiles. Since then, the annual number of drivers and passengers hospitalized overnight or longer for injuries sustained in automobile accidents has steadily declined. Clearly, the new regulations have made Vorland's automobiles safer for drivers and passengers who are involved in accidents.

Which of the following is an assumption on which the argument depends?

A The citizens of Vorland generally obey all local and national speed limits.

B Of the patients treated at hospitals in Vorland, the percentage being treated for injuries sustained in automobile accidents has decreased in the last ten years.

C The safety improvements required by the new regulations have not significantly affected the price of new automobiles.

D There has been no increase in speed limits on Vorland's major highways over the past ten years.

E Over the past ten years, there has not been a steady decline in the annual number of drivers and passengers involved in automobile accidents in Vorland.

题目讨论是不是new safety regulations让事故中的人更安全，DE都有一定影响，D可以说不是new safety regulations的原因、而是速度限制让事故中的人行驶更慢所以受伤程度轻；E往受伤人数去了、也可以解释为医院里重伤的人减少了是因为受伤的总基数减少了（同时想起那道经典的 受伤人数 VS 受伤程度不是一码事的题目）。这题结论说的是 让受伤当中的人怎样怎样了、不是应该在受伤程度上分析吗？正确答案E

长丝弓

D选项
限速增加无关。人们实际是否以较高或较低速度驾驶是不知道的

苦觉

the annual number of drivers and passengers hospitalized overnight or longer for injuries sustained in automobile accidents has steadily declined 说的是因为车祸导致住院的倒霉蛋数量少了，所以题目的逻辑是：新的措施导致车祸住院的倒霉蛋减少，很明显的gap是车祸住院的倒霉蛋减少是不是由于车祸数量少了造成的，E排除了这个可能，事故发生总数并没有减少，但是住院的倒霉蛋数量少了，说明新措施确实起到了效果，满足所问

Helenmm

长丝弓 发表于 2022-2-25 15:35
D选项
限速增加无关。人们实际是否以较高或较低速度驾驶是不知道的

感谢，明白了！

Helenmm

苦觉 发表于 2022-2-25 15:37
the annual number of drivers and passengers hospitalized overnight or longer for injuries sustained ...

懂了，谢谢！！！