单选题：The limitation of the P300's "confounding factors" is likel

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题目内容：
The limitation of the P300's "confounding factors" is likely to A．help uncover the truth
B．present details of a study
C．offer concealed information
D．affect the results of a study

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答案解析：

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Passage TwoQuestions 20 to 22 are based on the passage you have just heard.A．I

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下列各项中不属于票据行为的是（　　）。

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分类：英语六级  题型：单选题
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