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Fill类问题不断啊 恳请大牛解答 我知道我的问题很挫。。

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楼主
发表于 2013-4-9 17:57:30 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
OG47
Which of the following most logically completes the argument below?

Davison River farmers are currently deciding between planting winter wheat this fall or spring wheat next spring. Winter wheat and spring wheat are usually about equally profitable. Because of new government restrictions on the use of Davison River water for irrigation, per acre yields for winter wheat, though not for spring wheat, would be much lower than average.
Therefore, planting spring wheat will be more profitable than planting winter wheat, since________       
(A)        the smaller-than-average size of a winter wheat harvest this year would not be compensated for by higher winter wheat prices
(B)        new crops of spring wheat must be planted earlier than the time at which standing crops of winter wheat are ready to be harvested
(C)   The spring wheat that a farmer in the Davison River region plant is well adapted to the soil of the region
(D)        spring wheat has uses that are different from those of winter wheat
(E)        planting spring wheat is more profitable than planting certain other crops, such as rye


我很迷茫啊 我觉得A才无关呢。不懂啊不懂。求教NNs。
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沙发
 楼主| 发表于 2013-4-9 17:57:49 | 只看该作者
自己顶一下~~~~
板凳
 楼主| 发表于 2013-4-9 18:10:38 | 只看该作者
这种题好难好难好难  我头晕 这99T又是肿么个情况啊~~~KILL ME~~~~
地板
发表于 2013-4-10 09:59:26 | 只看该作者
所有的选项只有A是相关选项。。。。。
冬小麦和春小麦本来是盈利想当的,但是限水后,冬小麦每亩产量降低。
结论是:中春小麦比冬小麦profitable,为这个结论找原因,即找加强。
还是那句话:选项要和结论相关,即结论关键点就是春小麦的“profitable”,选项这个有关。
B选项中心意思是春小麦早点种——无关
C春小麦适应某地的泥土——与profitable无关
D春小麦用途不同——无关
E春小麦比其他作物利润好——提到了利润,但是和其他作物比,结论是与冬小麦比——排除,无关
5#
发表于 2013-4-10 22:16:40 | 只看该作者
Fill类的题一般是要补充一些条件才可以推出结论,而这道题我们需要补充的又正是这种公式类题的一个变量。
公式:price*yield=total (这题我们暂时不考虑winter wheat和spring white的cost,total=profitability)
premises: yield有了,winter wheat yield < spring wheat yield
Conclusion: winter wheat profitability < spring wheat profitability

可以看出我们需要补充的是price这个变量,如果winter wheat price是<=spring wheat price的,那么conclusion的公式仍然成立。如果price过高了,conclusion就可能会推翻了。

我觉得这类题如果比较晕的话,把公式写一写就会清晰很多嘎~~


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