Definition: a piece of writing about a particular subject Level: B1
我有一篇十页的论文下周一要交，是为历史课准备的。
I have a ten-page ___paper due for my history class next Monday.
我写了一篇关于非洲儿童的论文——他们关于内战的情感。
I wrote a ___paper about children in Africa - their feelings concerning the Civil war.
她提交了一篇关于气候变化的研究论文。
She submitted a research ___paper on climate change.
