标题: prep这倒是在不明白~ [打印本页] 作者: frankzhiwei 时间: 2010-11-18 22:21 标题: prep这倒是在不明白~ The country of Baurisia has, until now, been self-sufficient in both grain and meat.However, with growing prosperity in Baurisia has come a steadily increasing per capita consumption of meat, and it takes several pounds of grain to produce one pound of meat.Therefore, since per capita income in Baurisia is almost certain to rise further but increases in domestic grain production are highly unlikely, Baurisia is soon likely to become an importer of grain.
Which of the following, if true, most seriously weakens the argument?
A. When people increase their consumption of meat, they also tend to increase their consumption of grain.
B. The per capita consumption of meat in Baurisia is roughly the same across all income levels.
C. Per capita consumption of meat has not increased substantially in recent years in those countries from which Baurisia is likely to import meat.
D. It is more economical for Baurisians to import meat than grain.
E. During Baurisia's years of growing prosperity, the country's population has remained relatively stable.
真不知道为啥答案是D呀，感觉没什么题目是这样选法的呀，就是这种感觉有点直接跟题目对着干的选项~
求解释！ 作者: jake1 时间: 2010-11-18 22:54
削弱题直接点不就是让结论成立更困难或不成立啊。答案也很直接。 这题b倒是有点迷惑性。作者: sdcar2010 时间: 2010-11-19 01:59
weakener, by definition, is something 直接跟题目对着干