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题库 / OG2017V-CR-180
In an experiment, volunteers walked individually through a dark, abandoned theater. Half of the volunteers had been told that the theater was haunted and the other half that it was under renovation. The first half reported significantly more unusual experiences than the second did. The researchers concluded that reports of encounters with ghosts and other supernatural entities generally result from prior expectations of such experiences.
Which of the following, if true, would most seriously weaken the researchers' reasoning?
None of the volunteers in the second half believed that the unusual experiences they reported were supernatural.
All of the volunteers in the first half believed that the researchers' statement that the theater was haunted was a lie.
Before being told about the theater, the volunteers within each group varied considerably in their prior beliefs about supernatural experiences.
Each unusual experience reported by the volunteers had a cause that did not involve the supernatural.
The researchers did not believe that the theater was haunted.
我觉得ABC都有削弱的嫌疑，然而A说第二组的人认为 unusual experiences 怎样怎样，题里说的是第二组的 unusual experiences 少，没说他们对这个的看法，貌似无关，C 说的不如B 明确
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