8. By analyzing the garbage of a large number of average-sized households, a group of modern urban anthropologists has found that a household discards less food the more standardized—made up of canned and prepackaged foods—its diet is. The more standardized a household’s diet is, however, the greater the quantities of fresh produce the household throws away.
Which of the following can be properly inferred from the passage?
(A) An increasing number of households rely on a highly standardized diet.
(B) The less standardized a household’s diet is, the more nonfood waste the household discards.
(C) The less standardized a household’s diet is, the smaller is the proportion of fresh produce in the household’s food waste.
(D) The less standardized a household’s diet is, the more canned and prepackaged foods the household discards as waste.（C）
(E) The more fresh produce a household buys, the more fresh produce it throws away.
这题应该是逆否命题的选项是正确答案，但是偶每次都弄不清楚原命题中原因和结果谁是充分条件谁是必要条件，请赐教，谢谢！
The more standardized a household’s diet is, however, the greater the quantities of fresh produce the household throws away.
C is negate the antedent(否命题）。Above argument may lay out both sufficient and necessary condition. diet<-->fresh discards. Otherwise, C could not be right.
GMAT may not scale your ability on rigid logic reasoning.
To be discussed...
1。关键是对the more...the more/less的理解，它的英文意思为: used to show that two things change together. 两者并没逻辑关系（即谁推出谁），只有相互变化关系：一个变，另一个跟着变。
2。原文变化关系：less food discarded, more standardized.（相当于less standardized,more food discarded,两者变化方向相反） more standardized, more quantities of fresh produce（相当于less standardized, less quantities of fresh produce两者变化方向相同）.
3.C.的推理：the less standardized, the more food discarded, the less quantities of fresh produce. 当然the proportion of the fresh produce in food 便 more smaller。
经
| 欢迎光临 ChaseDream (https://forum.chasedream.com/) | Powered by Discuz! X3.3 |