【求助GWD一道逻辑题~谢谢】

水色青空

GWD-3-Q31:
Although most smoking-related illnesses are caused by inhaling the tar in tobacco smoke, it is addiction to nicotine that prevents most smokers from quitting.  In an effort to decrease the incidence of smoking-related illnesses, lawmakers in Sandonia plan to reduce the average quantity of nicotine per cigarette by half over the next five years.  Unfortunately, smokers who are already addicted to nicotine tend to react to such reductions by smoking correspondingly more cigarettes.
The information above most strongly supports which of the following predictions about the effects of implementing the Sandonian government’s plan?
A. The average quantity of tar inhaled by Sandonian smokers who are currently addicted to nicotine will probably not decrease during the next five years.
B. Sandonian smokers who are not already addicted to nicotine will probably also begin to smoke more cigarettes during the next five years than they had previously.
C. The annual number of Sandonian smokers developing smoking-related illnesses will probably decrease during the next five years.
D. The proportion of Sandonians attempting to quit smoking who succeed in that attempt will probably decrease during the next five years.
E. The number of Sandonians who quit smoking during the next five years will probably exceed the number who quit during the last five years。











答案选A，可是A很奇怪的提到了The average quantity of tar ，照道理应该是这样推理的，由于每单位烟中尼古丁的含量变低了，所以人们要吸更多的烟，推出的结论是上瘾的人们要摄入的尼古丁的含量不会减少.......而A说的却是tar的平均含量？？

求助~~~

flyincat

我是这么想的，文中只说了要减少每只烟里面尼古丁的含量，tar的量并没有减少。而结论是人们会抽更多的烟来弥补每支烟减少的尼古丁量，所以每只烟tar的量乘以吸烟的数量=吸入tar的总量，前者没变后者增加所以总量就增加了。

水色青空

up~

水色青空

再顶一下~

水色青空

顶一下~