GWD-9-16, why not D?

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?

1. 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.

2. 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.

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

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

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

为什么选D？

建议

1.先搜索以前的帖子，如果没有或者你的疑问仍然没有被回答再来发帖。倒不是因为发帖不好，是发帖等回是比较慢的

2.问问题的时候请附加自己的思路，这样回答时才更有针对性

答案应该是E   [E]饱和脂肪酸会增加心脏病的危险，但日常饮用红酒会减少这个危险。法国和美国人均对饱和脂肪酸的消费量是一样的，但法国的心脏病发病率低于美国，车为法国人喝更多的红酒。两国红酒的消费差距在减小（即美国赶上来了或法国消费量少了。），但心脏病的发病率还是一样（即美国没有因为多喝红酒而减少心脏病发病率）——即法国年轻人少喝红酒（虽然美国人没有多喝），但病情要到中年才发作，而美国人的消费正常，发病率和原先也一样。