交“白卷”心慌慌?最近，日本一位大一新生就给自己的教授交了“白卷”，却得到了最高分，因为这张“白卷”别出心裁，是用隐形墨水写的。

羽贺英美手举自己的“白卷”(截图来自BBC)

     A Japanese student of ninja history who handed in a blank paper was given top marks - after her professor realised the essay was written in invisible ink.

　　日本一名研究忍者历史的学生论文交了“白卷”，却得到了最高分，因为教授发现这篇文章是用隐形墨水写的。

　　ninja [ˈnɪndʒə]：n.日本武士，忍者

　　Eimi Haga followed the ninja technique of "aburidashi", spending hours soaking and crushing soybeans to make the ink.

　　羽贺英美采用了一种忍者“烤墨纸”技术，她花费数小时浸泡、研磨豆子来制作墨水。

　　The words appeared when her professor heated the paper over his gas stove.

　　教授把她的论文放到煤气炉上方加热后，论文就显示了出来。

　　"It is something I learned through a book when I was little," Ms Haga told the BBC. "I just hoped that no-one would come up with the same idea."

　　羽贺英美告诉英国广播公司说：“这是我小时候从一本书中学到的。我只是希望自己的想法独一无二。”

　　Ms Haga has been interested in ninjas - covert agents and assassins in medieval Japan - since watching an animated TV show as a child.

　　在小时候看过一部动画片后，羽贺英美一直对忍者(中世纪日本的秘密特工和刺客)很感兴趣。

　　medieval [ˌmedɪˈi:vl]：adj.中世纪的

　　After enrolling at Mie University in Japan, the first-year student took a class in ninja history, and was asked to write about a visit to the Ninja Museum of Igaryu.

　　入读日本三重大学后，这位大一新生选了一门关于忍者历史的课，教授要求学生们写一篇参观伊贺市忍者博物馆的文章。