[求助]prep的逻辑题

For serveral years, per capita expenditure on prescription drugs in Voronia rose by fifteen percent or more annually. In order to curb these dramatic increases, the ministry of health prohibited drug manufacturers from raising any of their products' prices. Even though use of prescription drugs did not expand after this price freeze, per capita expenditure for prescription drugs continued to increase by a substantial percentage each year.

which of the following, if ture, most helps to explain why the ministry's action did not achieve its goal?

A. After price increases were prohibited, drug manufacturers concentrated on producint new medications to replace existing products.
B. The population of Voronia rose steadily throughout the period.
C. Improvements in manufacturing processes enabled drug manufacturers to maintain high profit levels on drugs despite the price freeze.
D. In addition to imposing a price freeze, the fovernment encouraged doctors to prescribe generic versions of common drugs instead of the more expensive brand-name versions.
E. After price increases were prohibited, some foreign manufacturers of expensive drug ceased marketing them in Voronia.

answer: A

我怎么觉得没有选项是正确的呢？

怎么看出是A呀？

谢谢~~

好难的问题呀！第一遍我一个答案都没看出来，回头再看的时候才选A。

政府禁止处方药涨价，处方药的销量并没有上升。但是A则是说大量代替旧药的新药上市，由于新药的价格通常比旧药高（常识），所以一样能够起到加大处方药支出的效果。 所以选A

连这种“常识”也要考吗？ETS折磨人的方式真是变化多端呀

如果新药是由于技术进步引起的，不是更便宜嘛。

8过，这题其他选项就更扯不上了，只好这么理解了。

谢谢~

选项没有说新药的价格一定比现存的药价高，这只是其中一种可能性。

但是如果存在这种可能性是能够解释文章所说的原因的。所以A是最佳答案。

解释题不需要充分必要条件出现，所以不应该把答案解释为由于新药的价格通常比旧药高（常识）。

we have to eliminate the irrelevant and reverse answers.

A is the only one remain