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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.
答案为D
since后面说了个人均收入要增加，按照helr，也算是因呀，B选项说肉的人均消耗跟收入水平没有关系， 这么看看，也没有让因不错误，也不会导致其他果。。呵呵，那就是干扰项？？
另外，是不是我理解错误，meat怎么能用grain去生产，这不是能拿诺贝尔奖了？？
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发表于 2016-11-16 17:37:53
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