[求助]没问过的GWD-9-Q16

蓝露

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.

这道题选E，为什么呢？NN能帮忙分析下么？

越看越糊涂了~~~

izumi0803

我也看了半天才明白。。。有单词不认识，哎。。

这题要解释的是这个矛盾：

The difference in regular red-wine consumption has been narrowing, but no similar convergence in heart-disease rates has occurred.

（法国和美国）红酒消费量的差别变小了（前面说因为法国人消费量多过美国，所以得心脏病的人少），但是两国心脏病的发病率却没有同等的减少。

E选项说法国年轻人的红酒消费量急降（这可以引起两国红酒消费量差别变小），但是heart disease typically does not manifest itself until middle age.到中年才会有心脏病的症状出现。（法国喝红酒的人群结构有变化，但是没有影响到患心脏病的人群，所以法国美国心脏病的发病率没变化）

蓝露

哈~谢谢，明白了！！

简禾

牛

lenovoo

thx

lxzdong

thx

birdmiao

那B选项呢？也可以是因为法国的fat是increase 从而抵消影响的呀

xg49

LZ解答的很清楚明了，谢谢楼主！

东方微白

birdmiao 发表于 2010-8-23 11:49
那B选项呢？也可以是因为法国的fat是increase 从而抵消影响的呀

somewhat。太轻了

peterlongzhang

birdmiao 发表于 2010-8-23 11:49
那B选项呢？也可以是因为法国的fat是increase 从而抵消影响的呀

题目中说了，consumption of saturated fats is currently about the same，因此，已经明确了在现在时点，两个国家的脂肪消耗一样的。因此是否是B中的过去30年怎么怎么样，没有影响。而且B是somewhat，也证明了没什么影响。