解答简单题
Answer simple questions
以上为机器翻译结果，长、整句建议使用 人工翻译 。
方法：在研究1中，要求孩子们在三种不同的版本下(标准、情境重述、概念重述)解答简单和困难的两步变化应用题。
Method. In Study 1, children were asked to solve both easy and difficult two-step change problems in three different versions: standard, situational and conceptual rewording.
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