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The diagram below shows the development of the cutting tool in the Stone Age.

雅思学术类 Task 1 题目图片，主题为 Stone Age Cutting Tool Development。
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  1. 6.0分
    任务完成
    5.0分
    连贯与衔接
    6.5分
    词汇资源
    6.0分
    语法范围与准确性
    6.0分

    The pictures describe the cutting tools created by our ancestors at two different ages. Tool A was made approximately 1.4 million years ago.

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