难易程度：★★★
题目题材：生活保健
gre argument 201题目：
The citizens of Forsythe have adopted healthier lifestyles(7). Their responses to a recent survey(1) show that in their eating habits they conform more closely to government nutritional recommendations(2) than they did ten years ago(3). Furthermore, there has been a fourfold increase in sales of food products containing kiran(5), a substance that a scientific study has shown reduces cholesterol(4). This trend is also evident in reduced sales of sulia, a food that few of the healthiest citizens regularly eat(6).
提纲：
(1)The reliability of the recent survey is open to doubt, who responded? The number of respondents?
(2)The government nutritional recommendations do not necessarily represent standards of healthy lifestyles.
(3)The government nutritional recommendations may have changed during the past decade.
(4)The increase in sales of food products containing kiran does not necessarily indicate that the citizens are leading healthier lives, people may purchase these food products for other reasons.
(5)The author fails to inform us if there are any unhealthy ingredients in those food products which contain kiran.
(6)The fact that few of the healthiest citizens regularly eat sulia does not demonstrate that sulia is unhealthy.
(7)The author ignores many other factors that could be used to evaluate if people are having healthier lives.
注：题目中括号里的数字表明这句话体现的是提纲中第几号缺陷。
