求教！！两道归纳题取非的比较

Ajorz · 发表于 2017-8-7 11:19:53

B选项的late in life是最明显的错误吧

alex_heyday · 发表于 2017-8-7 11:52:32

by a program of regular exercise and weight reduction感觉很关键
这里是同时满足俩个条件才可行，
所以D是相当于直接了当表达了此意
B它只表明了LACK OF EXERCISE的人，这里感觉与题无关，in other words，逻辑结构有点问题，a&b导致C（降低胆固醇），但其余逻辑链可能都有点问题，（我不太懂这种非A则BALBLABLA这种逻辑）

答案是D

momojiayou · 发表于 2018-8-12 22:20:00

Increases in the level of high-density lipoprotein (HDL) in the human bloodstream lower bloodstream cholesterol levels by increasing the body's capacity to rid itself of excess cholesterol. Levels of HDL in the bloodstream of some individuals are significantly increased by a program of regular exercise and weight reduction.
这道题的逻辑思路是 increases in the level of HDL 可以 lower choleseterol level,怎么降低呢？方法是通过增强身体内自我消除多余cholesterol的机能。第二句表明重点是，在一个programme 里，通过regular exercise and weight reduction,一些人的HDL level increased. 这两句话本身没有直接的因果联系。
Which of the following can be correctly inferred from the statements above?
A
Individuals who are underweight do not run any risk of developing high levels of cholesterol in the bloodstream.
B
Individuals who do not exercise regularly have a high risk of developing high levels of cholesterol in the bloodstream late in life.--这个选项不正确是因为它把第二句一个项目的结果当成了因果联系。因为这个项目里面一些人通过运动和减肥可以增加cho level，并不能说明不运动和减肥就有高风险。这个中间有很多gap,其他没有增加level的人是什么原因，题中并没有指出，所以不足推论。
C
Exercise and weight reduction are the most effective methods of lowering bloodstream cholesterol levels in humans.
D
A program of regular exercise and weight reduction lowers cholesterol levels in the bloodstream of some individuals.--这个选项正确，是因为它直接分析了题中第二句的意思，用另外一个方式表达，没有绝对，也没有多余的猜测。
E
Only regular exercise is necessary to decrease cholesterol levels in the bloodstream of individuals of average
希望能有帮助，也谢谢分享，欢迎其他解释。

求教！！两道归纳题取非的比较

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