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题库 / OG2017V-CR-176
Which of the following, if true, most logically completes the argument?
Some dairy farmers in the province of Takandia want to give their cows a synthetic hormone that increases milk production. Many Takandians, however,do not want to buy milk from cows given the synthetic hormone. For this reason Takandia's legislature is considering a measure requiring milk from cows given the hormone to be labeled as such. Even if the measure is defeated, dairy farmers who use the hormone will probably lose customers, since __________.
it has not been proven that any trace of the synthetic hormone exists in the milk of cows given the hormone
some farmers in Takandia who plan to use the synthetic hormone will probably not do so if the measure were passed
milk from cows that have not been given the synthetic hormone can be labeled as such without any legislative action
the legislature's consideration of the bill has been widely publicized
milk that comes from cows given the synthetic hormone looks and tastes the same as milk from cows that have not received the hormone
因果推理
因为政府允许注射荷尔蒙的牛奶不贴上专用标签
所以使用荷尔蒙的农民不会流失很多顾客 削弱结论---即会流失
A 加强了，因为traces发现证明不了和普通的区别
B some无代表性
C 没有使用荷尔蒙的农民可以给他们的牛奶贴上标签。这就导致两种牛奶有区别了，顾客自然会选择有标签的牛奶--削弱结论
D 众所周知，无关
E 说明没区别 加强文段
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