12. Y has been believed to cause Z. A new report, noting that Y and Z are often

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试卷: TS Critical Thinking 20 题 No2


[单选题]

12. Y has been believed to cause Z. A new report, noting that Y and Z are often observed to be preceded by X, suggests that X, not Y, may be the cause of Z.
Which of the following further observations would best support the new report’s suggestion?

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