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Plant scientists have used genetic engineering on seeds to produce crop plants that are highly resistant to insect damage. Unfortunately, the seeds themselves are quite expensive, and the plants require more fertilizer and water to grow well than normal ones. Accordingly, for most farmers the savings on pesticides would not compensate for the higher seed costs and the cost of additional fertilizer. However, since consumer demand for grains, fruits and vegetables grown without the use of pesticides continues to rise, the use of genetically engineered seeds of this kind is likely to become widespread

. In the argument given, the two portions in boldface play which of the following roles?

【选项】The first presents a development that the argument Predicts will have a certain outcome, the second acknowledges a consideration that tends to weigh against that prediction

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题目基本信息

  • 所属科目:逻辑CR
  • 题目来源1:OG19-553
  • 题目来源2:OG20-635
正确率:42%