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?
(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.
(E) Smoking does not introduce into the body chemicals that prevent the helpful vitamins and minerals from entering the bloodstream.
(E) Smoking does not introduce into the body chemicals that prevent the helpful vitamins and minerals from entering the bloodstream.
(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.
(E) Smoking does not introduce into the body chemicals that prevent the helpful vitamins and minerals from entering the bloodstream.
(E) Smoking does not introduce into the body chemicals that prevent the helpful vitamins and minerals from entering the bloodstream. 作者: charles1992 时间: 2011-10-9 20:51
为什么C不对?
C。People whose diets are deficient in those vitamins and minerals do not typically have other health problems in addition to diminished lung function.
C取非,除了饭里少维他命 还有其他的病引起肝问题。不也削弱原文吗作者: charles1992 时间: 2011-10-11 21:40
(D) Stopping smoking will not typically improve lung function more than any diet changes can.
D为什么不对啊?好像没人选D ,但是我将D取非,不就是停止吸烟比改善饮食习惯更能改善肺功能。
排除了削弱原文的一种情况:给出它因-停止吸烟可以更好地改善肺功能
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