论文怎么翻译？

论文:
1. thesis
2. treatise
3. paper
Relative explainations:
<study> <memoir> <tractate> <theme> <article> <essay> <dissertation> <disquisition> <diss> <item> <discourse>

Examples:
1. 拖了那么久，他终于完成了论文。
After much delay, he finished his paper at last.
2. 我们的教授要求他就这个课题写篇论文。
Our professor asked him to write a treatise on the subject.
3. 他写的论文很优秀。
The treatise he wrote is excellent.
4. 还没有装订成册的论文稿件堆放在桌子上。
The unbound sheets of paper were piled up on the table.
5. 请在六月三十日前交论文。
Please hand in your paper before June thirtieth.
6. 我们相信你在星期五之前可以完成这篇论文。
We are depending on you to finish the paper by Friday.
7. 老师的办公室里堆满了大批不同的论文。
There is a heterogeneous mass of papers in the teacher's office.
8. 老师问了我一些和我的论文有关的问题。
The teacher asked me some questions relative to my paper.

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