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GRE阅读逻辑题训练(51)

2017-04-01 09:15:00来源:新东方在线整理

  为了帮助大家练习GRE阅读逻辑题,新东方在线GRE频道为大家带来GRE阅读逻辑题训练(51)一文,希望对大家GRE备考有所帮助。更多精彩尽请关注新东方在线GRE频道!

  The price of maple syrup has jumped from 22 dollars a gallon three years ago to 40 dollars a gallon today. It can be concluded that maple-syrup harvesters have been artificially inflating prices and that governmental price regulations are necessary to control rising prices.

  Which of the following, if true, casts the most doubt on the conclusion drawn above?

  A:The government already requires maple-syrup harvesters to submit their facilities to licensing by the health department.

  B:Insect infestation and drought have stunted the growth of syrup-producing maple trees and caused less-abundant syrup harvests.

  C:Maple syrup is produced in rural areas that suffer from high unemployment.

  D:Technological improvements in maple-syrup harvesting have reduced production costs.

  E:Maple-syrup prices have risen many times in the past, though never before at the rate recently observed.

  最佳解析:本题推理为:“枫糖价格上涨,所以一定是枫糖收获者人为哄抬了价格。”由事实得到结论,事实为价格增加了,结论为价格为什么增加作出说明,反对应找出“其他原因”也能说明枫糖价格为什么上升。(A)说明不了任何问题。(B)指出病虫害和干旱使枫糖减产,减产完全能够说明为什么枫糖价格上升。所以(B)指出其他原因作了反对。(B)is correct。(D)中降低成本应使价格下降而不是上升。(C)和(E)均无关。

  答案:B

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