六级The studies also ran up against many methodological challenges, the biggest of which centered on the old statistical saying, "Correlation does not equal causation."
这些研究还遇到了许多方法上的挑战,其中最大的挑战集中在古老的统计谚语“相关性不等于因果关系”上
2018年12月六级真题(第一套)听力 Section C
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