是不是太简单了啊？！我来问啦！

For similar cars and drivers, automobile insurance for collision damage has always cost more in Greatport than in Fairmont. Police studies, however, show that cars owned by Greatport residents are, on average, slightly less likely to be involved in a collision than cars in Fairmont. Clearly, therefore, insurance companies are making a greater profit on collision-damage insurance in Greatport than in Fairmont.

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

A. Repairing typical collision damage does not cost more in Greatport than in Fairmont.

B. There are no more motorists in Greatport than in Fairmont.

C. Greatport residents who have been in a collision are more likely to report it to their insurance company than Fairmont residents are.

 D. Fairmont and Greatport are the cities with the highest collision-damage insurance rates.

E. The insurance companies were already aware of the difference in the likelihood of collisions before the publication of the police reports.

现在对答案A没有疑问

想请问C是什么，我怎么觉得C也对啊！谁能解释一下？谢谢！

如果题目问的是"下列哪一项, 如果是对的, 可加强结论", 则C可以.

反过来想, 即使两个城市的居民汇报的可能性是一样的(即C不成立), 仍可得出结论. 所以C是错的.

哦，明白了

这个选项好阴险啊！

还要区分加强和假设！

推理好像应该这样：

保险费包括：1。automobile insurance for collision damage

            2. automobile insurance for repariing typical collision

damage

利润=收入-事故数*事故所赔额=收入-事故属* （撞车损失+修复）

前提说事故数少，结论说利润就高，那么得假设事故所赔偿金额少才行。

我怎么感觉collision damage包括repariing typical collision damage

还是有点不明白