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Question 1
The primary purpose of the passage is to
A. discredit the findings of a study due to flaws in the design of the study
B. point out a factor that may modify the extent of certain findings
C. show how results in a finding were unintentionally fabricated
D. bolster an argument concerning the interaction of learning and caffeine intake
E. expand on several oversights of a noteworthy study
我的答案： 无