论题范畴太大了。再具体点。越具体越好写。

勘你的题目，真为你老师害臊！

这好象是他自己选的题目！！！！！

子不教，父之过；教不学，师之堕。

(1) Ask your adviser and he/she may find some open topic for you.
(2) Read Journals on economics or social  study  and you may  find some interesting topic by yourself.
(3)  Read  some Master level paper and write down what you get from it. Name it " Review of XXXXX's throughts".

My 2 cents.