John: You told me once that no United States citizen who supports union labor sh

游客2024-01-12  16

问题 John: You told me once that no United States citizen who supports union labor should buy an imported car. Yet you are buying an Alma. Since Alma is one of the biggest makers of imports, I infer that you no longer support unions.
Harry: I still support labor unions. Even though Alma is a foreign car company, the car I am buying, the Alma Deluxe, is designed, engineered, and manufactured in the United States.
Harry’s method of defending his purchase of an Alma is to

选项 A、disown the principle he formerly held
B、show that John’s argument involves a false unstated assumption
C、contradict John’s conclusion without challenging John’s reasoning in drawing that conclusion
D、point out that one of the statements John makes in support of his argument is false
E、claim that his is a special case in which the rule need not apply

答案 B

解析 Evaluation of a Plan
Situation Harry has bought a car manufactured by Alma, a company among the largest makers of cars imported to the United States. From that fact John infers that Harry no longer holds a principle he formerly professed: that nobody who supports U.S. union labor should buy an imported car Harry responds by clarifying that the Alma Deluxe he is buying is entirely a U.S. product.
Reasoning What method has Harry used to show that his purchasing an Alma is not inconsistent with his principles? Harry does this by showing that John is incorrectly assuming that the car Harry is purchasing has been imported.
A Harry does not disown the principle he formerly held; rather, he tries to show that his purchase is consistent with it.
B Correct. John mistakenly assumes—without asserting—that the Alma that Harry is buying must be an imported car, and Harry indicates that this assumption is false.
C Harry challenges John’s conclusion but he also challenges John’s reasoning, by indicating that it relies on a false unstated assumption.
D John does not state the assumption that Harry indicates is false, but Harry recognizes that the assumption in question is unstated.
E Harry does not claim this; he claims, rather, that the new Alma he is purchasing is not imported and so his purchase does not violate his principle concerning union labor.
The correct answer is B.
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