学生白卷得了满分

• 作者: Elaine
• 来源期刊: 新世纪智能
• 学科: 交通运输
• 关键词: HEATED SOYBEAN VISIBLE
• 年，卷（期）: xsjzn_2019,（60）
• 页码范围: 25-26
• 页数: 2页
• 分类号: U48

摘要

A Japanese student of ninja(忍者)history who handed in a blank paper was given top marks-after her professor realised the essay was written in invisible ink.Eimi Haga followed the ninja technique of“aburidashi”(烤墨纸),spending hours soaking and crushing soybeans to make the ink.The words appeared when her professor heated the paper over his gas stove."