本文用历史研究与文学研究相结合的方法，根据翔实的材料，得出以下结论。
With full and accurate data, this paper make out some conclusions, using the method of combining the historic research and literary research.
根据研究结论，本文针对监管层、经营者、投资者提出政策建议。
By the research conclusion, the article sets up policy suggestion to supervisor, operator and investor.
最后，本文根据研究的结论提出了相应的政策建议。
Finally, we put forward the corresponding policy recommendations according to the conclusion studied.
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