[求助][讨论]GWD-9-Q16

zhongyukai

A diet high in saturated fats increases a person’s risk of developing heart disease. Regular consumption of red wine reduces that risk. Per-capita consumption of saturated fats is currently about the same in France as in the United States, but there is less heart disease there than in the United States because consumption of red wine is higher in France. The difference in regular red-wine consumption has been narrowing, but no similar convergence in heart-disease rates has occurred.

Which of the following, if true, most helps to account for the lack of convergence noted above?

A.    Consumption of saturated fats is related more strongly to the growth of fatty deposits on artery walls, which reduce blood flow to the heart, than it is to heart disease directly.

B.    Over the past 30 years, per-capita consumption of saturated fats has remained essentially unchanged in the United States but has increased somewhat in France.

C.    Reports of the health benefits of red wine have led many people in the United States to drink red wine regularly.

D.    Cigarette smoking, which can also contribute to heart disease, is only slightly more common in France than in the United States.

E.     Regular consumption of red wine is declining dramatically among young adults in France, and heart disease typically does not manifest itself until middle age.

答案选E，E固然是一个很完美的答案，但是B不是也可以同样解释这个问题吗？难道是
            Over the past 30 years出了问题？还有D选项也同样可以解释啊，难道是因为D选项没有体现出前后的变化吗？等待NN回答！多谢！

morespring

B：效果应该是相反的。推理如下：假设convergence of wine assumptions 是因为法国人喝红酒减少而引起的，这时候法国人得心脏病的应该增多，如果按照B选项，法国人同时还增加saturated fats的消费，这是法国人心脏病应该进一步增多，不会引起心脏病的convergence

D. 描述的是一直存在的现象，而非变化

zhongyukai

明白，非常感谢！