prep 07 cr1 14

疏离无罪

The higher the level of certain vitamins and minerals in the bloodstream, the better a person's lung function, as measured by the amount of air the person can expel in one second.The lung function of smokers is significantly worse, on average, than that of nonsmokers.Clearly, therefore, one way for smokers to improve their lung function is for them to increase their intake of foods that are rich in these helpful vitamins and minerals.

Which of the following is an assumption on which this argument depends?

(A) Smokers are less likely than nonsmokers to have diets that are rich in vitamins and minerals.

(B) The lung function of smokers whose diets are rich in those vitamins and minerals is generally better than that of nonsmokers with comparable diets.

(C) People whose diets are deficient in those vitamins and minerals do not typically have other health problems in addition to diminished lung function.

(D) Stopping smoking will not typically improve lung function more than any diet changes can.

(E) Smoking does not introduce into the body chemicals that prevent the helpful vitamins and minerals from entering the bloodstream.
正确答案是E
为什么A 不对呢 他假设smoker 没有吃很多有vitamins and minerals 的食物 所以建议他们吃更多。
虽然再看E的话 其实更好。但考试时看见A对就直接选了哎 o(╯□╰)o
还有哪位XDJM知道prep cr的详细解释在哪里 找不到啊

houhaibo528

First, U should make it clear about the logic link.
The higher the level of certain vitamins and minerals in the bloodstream--> the better a person's lung function

When it comes to smokers, their lung function is worse, so a increase of level of certain vitamins and minerals in bloodstream will help them.
BUT! Be careful, "intake of foods that are rich in these helpful vitamins and minerals" doesn't equal to
"a increase of level of certain vitamins and minerals in bloodstream" necessarily. This is the logic gap.

So any diet won't make the difference unless you can make the logic gap filled.

houhaibo528

And E option is the perfect stuff to fill the gap.

疏离无罪

谢谢LS啊 。。是我自己没看仔细。。没抓住关键内容

Chloe_

houhaibo528 发表于 2011-8-27 16:53
First, U should make it clear about the logic link.The higher the level of certain vitamins and mine ...

啊~ 感谢！这样就明白多了~