问题
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What is the main purpose of the passage?A.To outline the research findings on the brain st
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What is the purpose of Sentence 3 in Paragraph 1?A.It states the main idea of the paragrap
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What is the main purpose of the lecture?A.To introduce a method that can help students rem
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What is the main purpose of the lecture?A.To explain why scientists disagree about the age
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What is the main purpose of the lecture?A.To discuss recent innovations in laboratory equi
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What is the main purpose of the lecture?A.To compare the study of world history to the stu